If 1.80×10^{20} electrons move through a pocket calculator during a full day's operation, how many coulombs of charge moved through it? (answer in C)

Answers

Answer 1

Answer:

28.836 C

Explanation:

Data provided in the question:

Total number of electrons passed through the pocket calculator during a full day's operation = 1.80 × 10²⁰

Now,

We know that the charge of an electron is 1.602 × 10⁻¹⁹ C

Therefore,

The total charge moved through the calculator during the operations

= Total number of electrons passed × Charge of an electron

= (1.80 × 10²⁰) × ( 1.602 × 10⁻¹⁹ )

= 28.836 C

Answer 2

Total, 2.88×101 coulombs of charge moved through the calculator during a full day's operation.

The number of coulombs of charge moved through a pocket calculator when 1.80×10²⁰ electrons flow can be calculated using the charge of a single electron.

The charge of one electron is approximately -1.602×10⁻¹⁹ coulombs. Therefore, to find the total charge Q in coulombs, we multiply the number of electrons by the charge per electron:

Q = (number of electrons) × (charge per electron)

Q = (1.80×10²⁰ electrons) × (1.602×10⁻¹⁹ C/electron)
Q = 2.88×101 coulombs
Therefore, 2.88×101 coulombs of charge moved through it.


Related Questions

ack, age 55, comes to the office with a blood pressure of 144/98 mm Hg. He states that he did not know if it was ever elevated before. When you retake his blood pressure at the end of the exam, it remains at 144/98. What should your next action be

Answers

Answer:

One more reading will be taken to find the accuracy of reading and diagnose high blood pressure.

Explanation:

Every time we measure blood pressure, it is recommended to take two or three readings. If possible readings shall be taken in morning before eating and in evening to measure variations in blood pressure. Many people have postural hypertension and may have low or high BP upon rising or waking up.

What is one of the explanations Dr. Natterson-Horowitz gives for why there’s such a divide between treatment of humans and animals in contemporary society?

Answers

Answer:

One explanation that Dr Natterson-Horowitz gives for the divide between treatment of humans and animals in contemporary society is that there is a psychological separation that exists between human patients in hospitals which have technology and animals in the wild.

Explanation:

Dr Barbasra Natterson-Horowitz is a professor who is specialized in Medicine, Cardiology and in Human Evolutionary Biology. She wrote a book titled Zoobiquity and she explains that the reason for the divide between how humans and animals are treated is as a result of the psychological distance that exists between human patients in hospitals filled with technology and animals in the wild.

A pharmaceutical company is conducting an experiment to test the effectiveness of a tricyclic antidepressant.
Which of the following, if true, would indicate that the experimenters used a placebo?

A. The participants were assigned to the experimental or control groups by drawing lots.

B. The participants were informed about the medication they would be taking and its possible side effects before starting the treatment.

C. The participants in both groups did not know if they were getting a real or a false treatment.

D. The research assistants who administered the drugs were asked to establish rapport with the participants.

Answers

A placebo experiment is one that does no harm or good. A lot of the time researchers will have a. placebo group and a another control group with the actual treatment. The key in placebo is that no one knows if they have it or not. C

Final answer:

A placebo is a substance with no therapeutic effect used as a control in testing new drugs. In the context of the question, the statement 'The participants in both groups did not know if they were getting a real or a false treatment' would indicate the use of a placebo. This is due to the practice of 'blinding' in a placebo-controlled trial.

Explanation:

In conducting a medical experiment, especially involving pharmaceutical drugs, a placebo is often used. A placebo is a substance with no therapeutic effect that is used as a control in testing new drugs. The use of a placebo helps to isolate the effects of the actual medication being tested.

In the context of your question, option C: 'The participants in both groups did not know if they were getting a real or a false treatment,' would indicate that a placebo was used. This is because one of the key features of a placebo-controlled trial is that the participants do not know whether they are receiving the real medication or the placebo, which is known as blinding. This is done to prevent potential bias in the results based on the participants' expectations or perceptions.

So, in the case of an experiment testing the effectiveness of a tricyclic antidepressant, if a placebo was used, the participants in both the experimental and control groups would be 'blind' as to whether they were receiving the antidepressant or the placebo.

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If you become sick but are able to quickly see a specialist, take time off from work, and have meals prepared for you because of the efforts and connections of your friends, colleagues, and neighbors, you have a high level of ______.

Answers

Answer: You have a high level of social capital

Explanation:

Social capital can be defined as a variable that measures the collaboration between different groups in a human group. In other words, social capital can see the actions that people have among themselves so that things can go well. In the capital, sources affection, mutual trust, effective norms, and social networks are the main pillars.

It is very common to see how the dynamics of social capital occur in companies and various organizations. Collaborative work, thinking about the well-being of others and working all for the same feeling makes things go well and that everyone is happy with the result.

A person who is still sick and decides to prepare food for its friends, colleagues, and neighbors is someone who has a high level of social capital. It knows that these people are valuable and can count on them and even being sick does not impede doing something that pleases them.

We must identify that not everyone who has a high level of social capital means that they do things to produce good results. It is common to see organizations that are united and work hard to produce bad things. While it is true that they do collaborative and mutual support work, this is with a result that can negatively affect others.

What is the active functional group on the drug that is most responsible for its potency? How does artemisinin achieve selectivity between healthy cells and pathogen infected cells?

Answers

Answer:

The active functional group of a drug is that one that has the most prominent quality of adherence to the corresponding group on the target site and this selective binding of the group gave the property of targeted therapy and action. The pharmacophore modelling is done to ensure the design success of a drug but real life circumstances are mostly unpredictable. By this specific targeted action a drug acquires the property of differentiating between healthy and infected cells. Infected cells always have something different in their functional group expression as compare the the healthy cells. This helps the drug to differentiate between them.

Why is physical treatment of the wastewater important as a treatment prior to chemical or biological treatment?

Answers

Answer:

The most common method of treatment of wastewater is known as the biological method of wastewater.

The biological method of waste is performed in three stages called treatment in which the primary treatment is known as physical treatment.

During the physical treatment, the wastewater is treated physically by making a slope with the filters. The filters remove the large-sized debris and the plastic waste from the wastewater which does not become a problem during the biological treatment.

Skin, lung, and blood vessel walls have which tissue characteristic in common? Select one: a. simple squamous epithelium b. simple columnar epithelium c. reticular fibers d. elastic fibers

Answers

B. Simple columnar epithelium
SCE is in all skin, lung, and blood vessel walls.
Final answer:

The common tissue characteristic between the skin, the lung, and the walls of blood vessels is simple squamous epithelium. This tissue facilitates processes such as filtration and diffusion. Hence, it aids in the efficient exchange of gases, nutrients, and waste materials. So, the correct option is a.

Explanation:

The skin, lung, and blood vessel walls all have the tissue characteristic of simple squamous epithelium in common. This type of tissue is made up of a single layer of flat cells that have a smooth surface appropriate for reducing friction, and enhancing the process of filtration and diffusion. It's the kind of tissue that lines the alveoli in the lungs, capillaries and other small blood vessels, and the skin. This makes it an ideal tissue for the exchange of gases, nutrients, and waste materials.

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What effect will the calcitonin injections have on the calcitonin-treated rat’s vertebral bone density?

Answers

Answer:

The answer is - The calcitonin injections will increase the rat's vertebral bone density (indicated by a less-negative T score)

Explanation:

Calcitonin is produced in the thyroid gland by the parafollicular cells. It is a hormone which prevents the development of osteoporosis by reducing bone resorption and is known to increase bone density. Administering calcitonin to the rats resulted in their T score becoming less negative compared to the control rat therefore showing that it reduced the progression of osteoporosis.

The antidepressant fluoxetine (or Prozac) has a half-life of about days. What percentage of a dose remains in the body after one day?

Answers

The complete question is :

The antidepressant fluoxetine (or Prozac) has a half-life of about 3 days. What

percentage of a dose remains in the body after one day

Answer: 79.4 per cent.

Explanation:

Half life of a substance can be defined as the amount of time taken to degrade it half or it can be defined as the time which is required by the substance to become half of its original amount.

Here we need to find the half life of a medicine fluoxetine.

The equation which can be written for the question is :P(t) which will provide the information about the amount of medicine left in the body after one day or time (t)

Since the half-life is 3 days, P(t) = 2 −t/3.

Then P(1) = 2 −1/3 ≈ 0.794 =  0.794*100=79.4%  is the amount of substance left in the body after one day.

In the case below, the original source material is given along with a sample of student work. Determine the type of plagiarism by clicking the appropriate radio button.

Original Source Material

Student Version

The philosophical position known as constructivism views knowledge as a human construction. The various perspectives within constructivism are based on the premise that knowledge is not part of an objective, external reality that is separate from the individual. Instead, human knowledge, whether the bodies of content in public disciplines (such as mathematics or sociology) or knowledge of the individual learner; is a human construction.

References:
Gredler, M. E. (2001). Learning and instruction: Theory into practice (4th Ed.). Upper Saddle, NJ: Prentice-Hall.

Constructivist philosophers assert that knowledge is made by humans themselves. Knowledge is not "out there" in some external reality separate from us. It is we humans who create the content in disciplines such as math and biology. That knowledge would not exist without people making it.

References:
Gredler, M. E. (2001). Learning and instruction: Theory into practice (4th Ed.). Upper Saddle, NJ: Prentice-Hall.

Which of the following is true for the Student Version above?

Word-for-Word plagiarism

Paraphrasing plagiarism

This is not plagiarism

Answers

Answer:

This is not plagiarism

Explanation:

This example of a comparison between the original version and the student's version does not show any kind of plagiarism. A text is plagiarized when the author uses the exact sentences without giving credit to the original sources, it is important to use the techniques that we have in this student's version such as quotations and references.

The Student Version above is paraphrasing plagiarism. Paraphrasing plagiarism is when someone takes the ideas of another person and expresses them in their own words.

While this may seem less serious than word-for-word plagiarism, it is still considered a form of plagiarism.

In the Student Version example, the student has taken the ideas of the original source material and expressed them in their own words. However, they have not properly cited the source material, so the reader cannot tell that the ideas are not the student's own.

Here are some tips for avoiding paraphrasing plagiarism:

Always cite your sources, even if you are paraphrasing.Put the ideas of the original source material into your own words. Do not simply rephrase the same sentences.Be honest about which ideas are yours and which ideas are from your sources.

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A farmer's long-term exposure to pesticides has made the cells in his alveoli and bronchial tree susceptible to malignancy. Which of the following processes has taken place in the farmer's lungs?A) PromotionB) ProgressionC) InitiationD) Differentiation

Answers

Answer: Initiation

Explanation:

The farmers cell has be initiating its susceptibility towards the pesticides. The farmer if continues working in the field then he will develop the disease.

This susceptibility has developed because the cell has been in long term exposure to the pesticides as he works in the field.

The cells of the body lacks natural and fresh environment which is replaced with dirty and pesticides.

In which of Kubler-Ross's stages would someone who feels exhausted and has a sense of futility be? denial anger bargaining depression

Answers

Your answer would be depression.
Final answer:

Considering the symptoms described (exhaustion and sense of futility), the person would likely be in the Depression stage of Kubler-Ross's stages of dying. This stage is characterized by a sense of resignation and despair upon realization of the inevitability of demise.

Explanation:

The person described in your question, who is feelings of exhaustion and a sense of futility, would likely be in the Depression stage according to the Kubler-Ross model. This model is characterized by five stages a person goes through when facing the prospect of death: Denial, Anger, Bargaining, Depression, and Acceptance.

In the Depression stage, a person often feels a sense of hopelessness and resignation as they begin to truly accept the inevitable outcome. Their mood lowers to the point of exhaustion, leading to inactivity and worsening health conditions. This is as a result of realization of the inevitability of demise without any hope of prevention.

Of course, not everyone experiences these stages in the same order or even experiences them all. It's important to understand the general framework, while recognizing individual variation. A person's cultural, psychological, and personal background can greatly affect their response to the prospect of death.

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The nurse has a routine prescription to instill erythromycin ointment into the eyes of a newborn. Which statement, if made by the mother, demonstrates understanding of why this medication is used?

Answers

Final answer:

Erythromycin ointment is used to prevent eye infections in newborns.

Explanation:

The mother's statement that demonstrates understanding of why erythromycin ointment is used is if she says that it is to prevent eye infections in the newborn.

Erythromycin has been a valuable antibiotic in medical practice for many years, but its use may vary based on factors such as the specific bacterial infection, local resistance patterns, and individual patient considerations. Always follow medical advice and complete the prescribed course when using antibiotics to ensure effective treatment and reduce the risk of antibiotic resistance.

A person who visits the eye doctor is often given eye drops containing the drug atropine to dilate the pupils. A side effect of this drug is paralysis of the ciliary muscle, an effect called cycloplegia. Will a person with cycloplegia have difficulty with near vision or distance vision? Explain

Answers

Answer: the person with cycloplegia will have difficulty with near vision.

Explanation: Cycloplegia is the paralysis of the ciliary muscle which leads to loss of accommodation ( that is, loss in the ability to focus on an object as the distance varies) this occurs with topical application of atropine. Ciliary muscle is a smooth muscle at the vascular layer of the the eye that controls the shape of the lens.

Atropine is a cycloplegic drug that is used by eye doctors during eye examination to:. - better visualize the retina and to

-determine the true refractive error of the eye. This application by the doctor wears off with hours after the eye examination.

Paralysis of this muscle can lead to inability to adjust the curvature of the lens to focus on nearby objects. I hope this helps. Thanks.

The [α] of pure quinine, an antimalarial drug, is −165. If a solution contains 69% quinine and 31% of its enantiomer (ee = 38%), what is [α] for the solution?

Answers

Answer: The required [a] for slotion will be -62.7

Explanation:

The specific rotation of pure quinine= -165

% of pure quinine= 69%

% of its enantiomer=ee=31%

Enantiomer excess =(ee)=excess of a single enantiomer/entire mixture×100

Now,

Excess of a single enantiomer=69% - 31%=38%

Entire mixture=69% + 31%= 100%

(ee)=38/100 × 100

=38%

Net rotation= 0.69-0.31=0.38

Hence, [a] for solution will be = -0.38×165= -62.7

Following a small-bowel resection, a client develops fever and anemia. The surface surrounding the surgical wound is warm to the touch and necrotizing fasciitis is suspected. Another manifestation that suggests necrotizing fasciitis is

Answers

Since, the options are not given the question is incomplete. This complete question is as follows:

Following a small-bowel resection, a male client develops fever and anemia. The surface surrounding the surgical wound is warm to the touch and necrotizing fasciitis is suspected. Another manifestation that would most suggest necrotizing fasciitis is:

a. erythema.

b. leukocytosis.

c. pressure like pain.

d. swelling.

Answer: c. pressure like pain

Explanation:

Necrotizing fasciitis can be defined as the flesh eating disease. It is an infection it results due to the death of the parts of the soft tissues in the body. The disease spread rapidly. The symptoms are purple and red coloration of skin in the affected area, fever, vomiting and severe pain. The blisters may appear on the skin. The severe pain, including beyond the area of the skin that is swollen and red. The pain creates pressure on the internal organs.

Vitreous humor Select one: a. is produced on a daily basis. b. is less viscous than aqueous humor. c. does not contribute to intraocular pressure. d. helps to hold the lens and retina in place. e. is located in the anterior chamber.

Answers

Answer: d. helps to hold the lens and retina in place.

Explanation:

The vitreous humor is a clear and colorless fluid which helps in filling up the space between the lens and retina of the human eye.

The composition of the vitreous humor consists of 99% of water, rest composition includes the proteins, sugars and salts. It has a jelly like appearance. The vitreous humor remains in contact with the retina. The pressure created by the vitreous humor keeps the retina and lens at it's place.

Thus option d is correct.

13. Which of the following is a key factor influencing the uptake of contaminants by ingestion:

a. contaminant concentration
b. carcinogenic potential
c. volatility
d. partition coefficient 1

Answers

Contamination concentration is the key factor which influences uptake of contaminants by ingestion.

Explanation:

Contaminant concentration refers to the amount of contaminant in a medium. As the concentration of the contaminant increases the toxicity increases.

Ingestion of contaminant is one of the exposure pathway. Contaminant concentration is one of the variables which are accounted to calculate the exposure dose of a contaminant.

To analyze the exposure of contaminants in potable drinking water, the concentration of the contaminants is analyzed from tap water samples collected from each house.

The toxicity symptoms of the ethanol toxicity tend to become severe with increase in drinking ethanol more which increases the body’s ethanol toxicity.

Answer:

Contaminant Concentration is the  key factor which influences the uptake of contaminants by ingestion

Explanation:

There are various ways in which individuals may be exposed to contaminants in environmental media .Below mentioned are some of the ways :

Ingestion refers to the  process of intake of food,water or any substance.Ingestion of contaminants can occur through intake of water (Ground water or surface water) or any food depending on the concentration of containment in that particular substance. Inhalation of contaminants: Individual can also inhale contaminants through  polluted air.Dermal contamination occur when an individual skin comes in contact with the contaminated air ,water,soil and other contaminated material

Which of the following examples listed below illustrates homeostasis maintained by a negative feedback? Select one: a. Release of chemical signals by keratinocytes that have been damaged by UV light that will increase the production of melanin. b. The near waterproof secretions of glycolipids that is released by cells in the stratum granulosum. c. The secretion of antibacterial compounds in sebum. d. Removal of nitrogenous compounds like urea within the sweat.

Answers

Answer:

Option A, Release of chemical signals by keratinocytes that have been damaged by UV light will increase the production of melanin.

Explanation:

Negtaive feedback mechanism of homeostasis maintains the stability of any internal condition or function through lessening of output of a system or through slow down of a functional system.  

Here in this case the keratinocytes function is reduced by damaging them on exposure to UV light which further triggers the release of chemicals that enhance the production of melanin.

Hence, option A is correct

Final answer:

An example that illustrates homeostasis maintained by negative feedback is the removal of nitrogenous compounds within sweat.

Explanation:

The correct answer is d. Removal of nitrogenous compounds like urea within the sweat.

In homeostasis, the body maintains a stable internal environment. Negative feedback is a mechanism that helps maintain homeostasis by responding to a deviation from a set point and reversing the direction of change. In this case, the removal of nitrogenous compounds like urea within sweat is an example of homeostasis maintained by negative feedback.

When there is an increase in body temperature, such as during exercise, the sweat glands produce sweat that contains nitrogenous compounds like urea. This helps to cool down the body by evaporating from the skin's surface. As the body temperature decreases and returns to the set point, the production of sweat and nitrogenous compounds decreases as well, restoring homeostasis.

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The nursing instructor is pointing out the various complcations which can occur during pregnancy in women with diabetes mellitus. The instructor determines the session is successful after the students correctly choose which complication that can occur if the diabetes is not kept under control

Answers

Answer:

The nursing instructor is pointing out the various complcations which can occur during pregnancy in women with diabetes mellitus. The instructor determines the session is successful after the students correctly choose which complication that can occur if the diabetes is not kept under control?

A. hydramnios

B. hypotension

C. Placenta previa

D. Cerebral Vascular accident

Explanation:

Out of control diabetes can result in hyperglycemia which tend to lead to excessive amniotic fluid( hydramnios or poly hydramnios) because of Osmotic presure fluid shifts. A small placenta is more common than placenta previa. the woman may experience hypertension verus hypotension if the diabetes is not controlled. cerebral vascular accidents are usually not related to diabetes but to circulatory issues.

The characteristic of cancer cells that enables the other hallmarks of cancer is ___________

Answers

Answer:

The answer is "Genomic instability".

Explanation:

The greater mutation rate in the downstream cell genome leads to the genome's heterogeneity, which becomes genetic heterogeneity or molecular disturbance. These changes can include alterations to the nuclear acid chain, genetic rearrangement or aneuploidy.

It's also known as hereditary cancers, that sometimes defined by genetic variations in genes like BRCA1, BRCA2, MSH2, MYH, they lead to genomic disruption in the maintenance genes.

the answer is genomic instability

is it bad to drink or eat the stuff inside the tea? i just drank some..

Answers

Answer:

yes it can lead to diyaria,or too much sugar

Explanation:

Listed below are blood types for several children and their mothers. Give all possible genotypes and blood types for the father of each child. Child's blood type Mother's blood type a. A A b. O B c. AB A d. B AB

Answers

Answer:aaa then b

Explanation:because yourwelcom

Cochlea implants could consist of: Select one: a. a percutaneous plug b. both a percutaneous plug and magnetic couplings c. magnetic coupling d. isometric coupling

Answers

Answer:Cochlea implants could consist of both a percutaneous plug and magnetic couplings. Correct option is B.

Explanation: Cochlea implants are hearing aids which are surgically implanted to provide a person with moderate to profound sensorineural hearing loss, a modified sense of sound. The implant has two components:

- percutaneous plug: This makes up the outside component which is generally worn behind the ear.

-magnetic couplings. This makes up the inner component which is generally implanted inside the skull.

Hope this helps. Thanks.

A person weighs 150.0 lb, and the correct dosage of a drug is given as 1.50 mg per kilogram of body weight. How many milligrams of the drug should be given? (2.20 lb = 1 kg)

Answers

Answer: The amount of drug that must be given is 102.3 grams

Explanation:

We are given:

Weight of the person = 150.0 lb

Converting this weight into kilograms, we use the conversion factor:

1 kg = 2.20 lb

So, [tex]150.0lb\times (\frac{1kg}{2.20lb})=68.2kg[/tex]

Applying unitary method:

For 1 kg of body weight, the correct dosage of the drug is 1.50 mg

So, for 68.2 kg of body weight, the correct dosage of the drug will be [tex]\frac{1.50mg}{1kg}\times 68.2kg=102.3mg[/tex]

Hence, the amount of drug that must be given is 102.3 grams

The amount of drug in milligrams that must be given will be "102.3 mg".

Mass and weight

According to the question,

Person's weight = 150.0 lb

We know that,

2.20 lb = 1 kg

then,                    = 150.0 × ([tex]\frac{1 \ kg}{2.20 \ lb}[/tex])

                           = 68.2 kg  

For one kilogram of body weight

Dosage of a drug = 1.50 mg

Now,

For 68.2 kg body weight,

The correct dosage will be:

= [tex]\frac{1.50 \ mg}{1 \ kg}[/tex] × 68.2 kg

= 102.3 mg

Thus the above approach is right.

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A message to drink is sent when Select one: a. too little ADH is detected by the kidneys. b. the kidneys detect too much glycogen. c. ADH is detected by the hypothalamus. d. angiotensin is detected by the hypothalamus.

Answers

Answer: d. angiotensin is detected by the hypothalamus.

Explanation:

Angiotensin is a hormone which causes the narrowing of the blood vessels. This helps in maintaining the blood pressure and also maintains the fluid balance in the body. The hormone acts on the brain. This hormone binds to the hypothalamus gland of the body, it stimulates the thirst and increases the demand for water intake. It also stimulates the release of antidiuretic hormone by the pituitary gland to increase the concentration of urine by preventing water loss.

A beer koozie is designed to keep a beer cold. The koozie is effective at blocking heat transfer from your warm hand into the cold beer and it also prevents condensation from forming on the side of the beer. Why does preventing condensation on a beer bottle keep the beer cool on a hot humid day?

Answers

Answer:

Water-vapour molecules give of their heat to convert into liquid water which is absorbed by the surface on which they condense.

Explanation:

Preventing condensation on the surface of a cold beer container will prevent the heat gain by the beer by absorbing the energy from the surrounding molecules of the water vapour present in the air in the form of humidity.When water vapour of the atmosphere which is present in the form of humidity condenses on the cold surface it releases the latent heat of vapourization to the cold surface of the container which is directly in contact with the beer which further absorbs the heat form the container.We know that the latent heat of vapourization of water is [tex]2260\ kJ.kg^{-1}[/tex] . This amount of heat is very high and can lead to gain of temperature considerably.

Answer:

Water-vapour molecules give of their heat to convert into liquid water which is absorbed by the surface on which they condense.

Select the correct statement about the function of myocardial cells. A. Each cardiac muscle cell is innervated by a sympathetic nerve ending so that the nervous system can increase heart rate. B. The influx of potassium ions from extracellular sources is the initiating event in cardiac muscle contraction. C. The refractory period in skeletal muscle is much longer than that in cardiac muscle. D. The entire heart contracts as a unit or it does not contract at all.

Answers

Answer:

Option-D

Explanation:

The myocardial cells form the cardiac muscle present in the heart. The heart receives its signal from the autonomic nervous system but not all the cells receive the signals.

The SV and AV node present in the upper heart produces the potential for the contraction. The action potential gets transferred through the cell and finally reach the lower ventricle through Purkinje fibres.

This allows the contraction of both the ventricles simultaneously and sows that the heart cells contract simultaneously.

Thus, Option-D is the correct answer.

Myocardial cells are the muscle cells that make up the heart contracts as a unit or it does not contract at all. So option d is correct.

Muscle cell are striated, like skeletal muscle cells, but they have a different electrical and contractile properties.

Myocardial cells are innervated by the autonomic nervous system, but they are not directly controlled by individual nerve endings. Instead, the heart rate is controlled by the autonomic nervous system, which releases hormones that affect the heart.

The refractory period in skeletal muscle is much shorter than that in cardiac muscle because cardiac muscle cells need to be able to contract rapidly and repeatedly, as the heart needs to pump blood continuously.

The influx of calcium ions from extracellular sources is the initiating event in cardiac muscle contraction. This is different from skeletal muscle, where the influx of sodium ions is the initiating event.

So the correct statement is D that the entire heart contracts as a unit or it does not contract at all.

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You are testing a new drug for weight loss. You find that the drug does in fact statistically show a weight loss. Do you market the new drug? Why or why not?

Answers

This problem doesn’t really have a yes or no answer. It’s more opinion based

Answer:no

Explanation: Many drugs would work for weight loss adderall,vyvanse EXT. You would need to do more research on other  negative heath effects the drug could give people.

Match the horn with its vaguely defined function ___ Dorsal horn A. Somatic Motor ___ Ventral horn B. Sensory ___ Lateral Horn C. Autonomic nervous system

Answers

Dorsal horn – Sensory

Ventral horn – Somatic motor

Lateral horn – Autonomic nervous system

Explanation:

The dorsal horn is composed of the cell bodies of the sensory neurons. The sensory information which enters the spinal cord is received by the dorsal horn. It conveys sensory signals like touch, vibration etc.

The ventral horn is composed of the cell bodies of the motor neurons. The axons of these motor neurons extend into the skeletal muscles and innervate them. Muscular contractions are controlled by these neurons in the ventral horn. Somatic reflexes of the spinal cord are associated with the ventral horn.

The lateral horn is composed of the cell bodies of the visceral neurons or the sympathetic nervous system (of autonomic nervous system). It is found only in the thoracic segment.  

Other Questions
I'maGoldMiner has benefited from a record rise in gold prices in the global commodities market. While the price of its output is highly influenced by market speculation, if it wants to increase production to take advantage of the current profit-maximizing opportunity, the company1. must accept market price for its physical capital inputs.2. must reduce what it pays for inputs that make up its costs of production.3. must reduce production to encourage speculators to drive gold prices higher.4. must alter the price of its labor inputs to maximize profits. As a science major, you are assigned to the "Atomic Dorm" at college. The first floor has one suite with one bedroom that has a bunk bed for two students. The second floor has two suites, one like the one on the first floor, and the other with three bedrooms, each with a bunk bed for two students. The third floor has three suites, two like the ones on the second floor, and a third suite that has five bedrooms, each with a bunk bed for two students. Entering students choose room and bunk on a first-come, first-serve basis by criteria in the following order of importance:(1) They want to be on the lowest available floor. (2) They want to be in the smallest available dorm room. (3) They want to be in a lower bunk if available.(a) Which bunk does the 1st student choose?(b) How many students are in top bunks when the 17th student chooses?(c) Which bunk does the 21st student choose?(d) How many students are in bottom bunks when the 25th student chooses? What is the piecewise model of f(x)=.7|x-4|+2? in measuring what does NEST stand for? help need an answer quick Matti finds himself unable to adjust to college because he doesn't seem to have the study skills necessary to earn passing grades. Matti's predicament would probably best be explained by:________. A. Psychosocial theory. B. Bronfenbrenner's ecological theory.C. The competence-environmental press theory.D. Kohlberg's theory of moral development. Hiking along a remote trail, Chen surprises a mother bear with her cubs. Chen's pupils dilate, his breathing rate increases, and his heart rate soars. Which part of the nervous system is MOST involved in this process? what does martin luther king jr mean when he said "Freedom at last" There are five sales associates at Mid-Motors Ford. The five associates and the number of cars they sold last week are: Sales Associate Cars Sold Peter Hankish 8 Connie Stallter 6 Juan Lopez 4 Ted Barnes 10 Peggy Chu 6 a. How many different samples of size 2 are possible?b. List all possible samples of size 2, and compute the mean of each sample.c. Compare the mean of the sampling distribution of the sample mean with that of thepopulation. How does the Lewis & Rieman design cycle compare to the three stage cycle (design, prototype, evaluate) described in lecture? The 2011 income statements of Leggett & Platt, Inc., reports net sales of $3,636.0 million in 2011 and $3,359.1 million in 2010. The balance sheet reports accounts and other receivables, gross of $527.9 million at December 31, 2011, and $501.0 million at December 31, 2010. Calculate the average number of days that receivables were outstanding in 2011. Explain in plain English, what this ratio means. Did it improve from 2010? Write and balance the equation for the formation of magnesium hydroxide and hydrogen from magnesium and water. Determine the possible mole ratios. What is it called when u inhale and exhale what is Dona Lina's attitude towards native American or Indians? Ashley is taking out a loan in the amount of $12,000. Her choices for the loan are a 4-year loan at 7.00% annual simple interest and a 5-year loan at 8.00% annual simple interest. What is the difference in the amount of interest Ashley would have to pay for these two loans? why do many animals in temperature countries grow thick coats before winter? 3(x + 1) + 4x + 3 = 34 What symptom would you expect a patient whose large intestine is notfunctioning properly to show?A. DehydrationB. Extreme hungerC. VomitingD. Constipation What happens to the current supplied by the battery when you add an identical bulb in parallel to the original bulb? What three parts of the scientific name of a plant do you need to know and understand as an agriscientist? Why?