Question

If all nerves to the heart were severed, would the heart instantly stop beating? Explain.

If all nerves to the heart were severed, would the heart instantly stop beating? Explain.

Science   Anatomy-And-Physiology   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

No;If all nerves to the heart were severed, the heart would not instantly stop beating. This is because the heart has its own mechanism to generate the action potential.The pacemaker of the heart or the SA node generates the action potential required for the contraction of the heart and the heart is under autoregulation.So even if we cut off all the nerves that serve the heart the heart will continue to beat.The nerves only regulate the rate of heartbeat and the strength of contractions.

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
If all nerves to the heart were cut, the heart would beat at about 100 beats...
If all nerves to the heart were cut, the heart would beat at about 100 beats per minute. At rest, most people have heart rates significantly lower. From this information you know that Select one: a. Heart rate is primarily controlled by hormones rather than the nervous system b. At rest, parasympathetic stimulation of the heart is greater than sympathetic c. There is somatic innervation of the heart d. At rest, sympathetic innervation of the heart is greater than parasympathetic
EXPLAIN TO YOUR NON SCIENTIST FRIEND WHO ASKS, WHY DOES THE HEART KEEP BEATING ? WHAT...
EXPLAIN TO YOUR NON SCIENTIST FRIEND WHO ASKS, WHY DOES THE HEART KEEP BEATING ? WHAT IS UNIQUE ABOUT THE HEART TO ALLOW THIS?
Explain which nerves would have to be damaged for each of the following symptoms to occur:...
Explain which nerves would have to be damaged for each of the following symptoms to occur: 1. The person cannot flex the wrist or fingers and has lost sensation on the lateral side of the palm. 2. The person cannot extend the leg at the knee on one side and has numbness on the anterior and lateral thigh. 3. The person is unable to move the eye inferiorly and laterally 4.. The person has a hoarse voice, difficulty swallowing and...
Injections of potassium chloride are used in lethal injections to stop the heart. Which part of...
Injections of potassium chloride are used in lethal injections to stop the heart. Which part of the cardiac action potential is most affected by increasing extracellular potassium levels? The plateau phase is greatly reduced.                                       d. The repolarizing phase is prevented.         Tetanus develops as calcium drops dramatically.                    e. All these are affected. The initial depolarizing phase is blocked.
explain healthy heart muscle impulse begins and how is it transmitted to all parts of the...
explain healthy heart muscle impulse begins and how is it transmitted to all parts of the muscle so it may contract as a functional stneytium
1) If a neuron were poisoned to stop ATP production, what would happen? a. Action potentials...
1) If a neuron were poisoned to stop ATP production, what would happen? a. Action potentials would continue indefinitely b. Continue production of action potentials for a period of time 2) Cell adhesion molecules: a. neither of these choices b. are membrane proteins that stabilize the pre-synaptic and post-synaptic membranes in synapses c. make gap junctions that permit two cells to be electrically coupled
1 a.) Suppose that only 25% of all drivers come to a complete stop at an...
1 a.) Suppose that only 25% of all drivers come to a complete stop at an intersection having flashing red lights in all directions when no other cars are visible. What is the probability that, of 15 randomly chosen drivers coming to an intersection under these conditions, exactly 3 will come to a complete stop? answer.225 1. b) Now suppose that only 20% of all drivers come to a complete stop at an intersection having flashing red lights in all...
Would you stop illegal file sharing if you received a warning with a penalty notice attached?...
Would you stop illegal file sharing if you received a warning with a penalty notice attached? More than 1000 adult New Zealanders (aged 15 to 50 years) were asked this. Of those who have illegally file-shared content 70% said that they would stop. Assume that you sample n=250n=250 New Zealanders. What is the probability (±±0.0001) that the sample proportion pˆp^ of those who would stop after being given a warning is between 0.67 and 0.73 if the population proportion is...
Select all of the CORRECT statements associated with heart physiology. There may be more than one...
Select all of the CORRECT statements associated with heart physiology. There may be more than one answer. (2 pts) Select one or more: a. About ninety-nine percent of the cardiac cells are autorhythmic cells while one percent are contractile           cells. b. High levels of norepinephrine or epinephrine in the atria and the ventricles will increase heart rate and stroke volume. c. Muscarinic receptors are in the atria and the ventricles. d. Norepinephrine is secreted by both sympathetic pre-ganglionic and...
Provide an instant positive catch all phrase or thought that would stop the provided thinking traps....
Provide an instant positive catch all phrase or thought that would stop the provided thinking traps. Catastrophizing: You’re sure that the worst-case scenario will inevitably happen. If a classmate turns down your invitation to hang out, you’re convinced that you are doomed to be an outcast for life. Over-generalizing: You think of a single negative event as a never-ending pattern. If you stumble as you rush across the quad, you are sure the entire student body thinks you’re a klutz.
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT