Question

Which of the following structures receives the depolarization wave from the atria and passes impulses onto...

Which of the following structures receives the depolarization wave from the atria and passes impulses onto the ventricles?

A) AV node

B) SA node

C) atrioventricular bundle

D) bundle branches

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

Homework Answers

Answer #1

Answer:- A) AV node

Explanation:- Depolarization begins in the SA node. Then it spreads more slowly across the atria and the AV node slows down the conduction of action potentials. From the Atrioventricular (AV) node, the depolarization moves into the purkinje fibers, which transmit electrical signals very rapidly among the ventricular contractile cells. Therefore AV node receives the depolarizing wave from the atria and passes impulses onto the ventricles.

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
Which of the following correctly lists the sequence of structures that a cardiac action potential follows...
Which of the following correctly lists the sequence of structures that a cardiac action potential follows in order to excite normal contraction of the heart? Group of answer choices Bundle of His, Purkinje fibers, Atrioventricular (AV) node Sinoatrial (SA) node, Purkinje fibers, AV node, Bundle of His Purkinje fibers, AV node, SA node, Bundle of His SA node, AV node, Bundle of His, Purkinje fibers Bundle of His, SA node, AV node, Purkinje fibers
In an ECG, the T wave is a. caused by ventricular depolarization and ventricular contraction b....
In an ECG, the T wave is a. caused by ventricular depolarization and ventricular contraction b. atrial contraction c. caused by ventricular repolarization d. known as the pacemaker potential The normal pathway followed by cardiac action potential is to begin in the SA node and then propagate a. to AV bundle fibers and Purkinje fibers b. to internodal fibers → AV bundle fibers → AV node → Purkinje fibers c. to internodal pathways → AV node → AV bundle fibers...
Which of the following waves of an EKG is correct? P wave-depolarization of atria QRS wave-repolarization...
Which of the following waves of an EKG is correct? P wave-depolarization of atria QRS wave-repolarization of ventricles T wave-depolarization of ventricles QRS wave-depolarization of atria Which of following is correctly matched? Tricuspid valve- permits blood flow from right to left atrium Pulmonary valve- permits blood flow from left ventricle to aorta Mitral valve- permits blood flow from left atrium to left ventricle Aortic valve- permits blood flow from right ventricle to pulmonary artery 3.Cyclic AMP is a common second...
Q1. At what point on an EKG semi-lunar valves open? A. At the "S" Wave B....
Q1. At what point on an EKG semi-lunar valves open? A. At the "S" Wave B. Throughout the ST segment C. At the "Q" wave Q2. Which of the following is false regarding isometirc contraction? A. AV and semi-lunar valves are closed B. The volume of blood in the ventricles is the same as the volume of blood in the Pulmonary artery and aorta. C. There is no change in blood volume in the ventricles as they contract Q3. During...
A. Do any heart sound occur during the P wave? yes or no B. During the...
A. Do any heart sound occur during the P wave? yes or no B. During the QRS wave, the atria repolarizes and ___________ . relax or contract C. During the QRS wave, blood entering the ventricles from the atria causes the initial (increase or decrease) in ventricular pressure. decrease or increase D. During the QRS wave, what happens when the pressure in the atria exceeds the pressure in the ventricles? semi-lunar valves close, AV valves close,or AV valves open E....
Part 1: Would you say the atria or ventricle take longer to depolarize? Why? A. Atria...
Part 1: Would you say the atria or ventricle take longer to depolarize? Why? A. Atria take longer to depolarize; the average length of the P wave is longer than the average length of the QRS complex B. Ventricles take longer to depolarize; the average length of the P wave is longer than the average length of the QRS complex C. Atria take longer to depolarize; the average length of the QRS complex is longer than the average length of...
1) what would be the net effect of blocking ryanodine receptor channels in cardiac contractile cells?...
1) what would be the net effect of blocking ryanodine receptor channels in cardiac contractile cells?    a)asystole     b) positive inotropic effect    c) negative inotropic effect     d) positive chronotropic effect      e) negative chontropic effect 2) A drug that partially blocked voltage gated k+ channels in myocardial contractile cells would likely have what effect?    a) aysytole     b) positive inotropic effect     c)negative inotropic effect      d)positive chronotropic effect      e) negative chronotropic effect 3)The I_f...
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...
Describe the sequence of structures through which a drop of urine passes from the time it...
Describe the sequence of structures through which a drop of urine passes from the time it flows from the nephron until it reaches the urinary bladder. B) At which point is the the majority of water reabsorbed? At which point(s) is sodium reabsorbed? Where does ADH and aldosterone exert their actions?
Select the MOST CORRECT answer. During the cardiac cycle... Blood flows from the right atrium, through...
Select the MOST CORRECT answer. During the cardiac cycle... Blood flows from the right atrium, through the AV valve, and is pumped by the right ventricle into the pulmonary artery. The ventricular diastole occurs at the same time as atrial systole and atrial diastole. The second heart sound (S2, or dup) occurs just as the left ventricle reaches its highest pressure, which exceeds aortic pressure. Both a) and b) are correct and c) is incorrect. a), b) and c) are...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT