Bundle of His

generates action potential which causes the atria to contract

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conducts the action potential and helps in the contraction of ventricles

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regulates the rhythm of heart rate

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changes the duration of contraction between the atria and ventricles

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Solution

The correct option is B conducts the action potential and helps in the contraction of ventricles
The sino-atrial node (SAN) is responsible for the generation of action potential which causes the atria to contract.
The atrio-ventricular node (AVN) is responsible for the regulation of the rhythm of the heart rate by delaying conduction of impulse. It also changes the duration of contraction between the atria and the ventricles.
Bundle of His is responsible for the conduction of action potential and helps in the contraction of ventricles.

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Similar questions

Q. The action potential is conducted from the atria to ventricles by:

Q. Read the following statements and choose the correct option:
Statement 1: Atria receive blood from all parts of the body which subsequently flows to ventricles.
Statement 2: Action potential generated at sino-atrial node passes from atria to ventricles.

Q. In the first phase of the cardiac cycle when both the atria are filled with blood, an action potential is generated by the SA node and then the atria contract. This is called as ________________.

Question 18
What prevents backflow of blood inside the heart during contraction?

(a) Valves in heart
(b) Thick muscular walls of ventricles
(c) Thin walls of atria
(d) All of the above

Read the following statements and choose the correct option.
Statement I Atria receive blood from all parts of the body which subsequently flows to ventricles.
Statement II Action potential generated at sino-atrial node passes from atria to ventricles.
(a) Action mentioned in statement I is dependent on action mentioned in Statement II
(b) Action mentioned in statement II is dependent on action mentioned in Statement I
(c) Action mentioned in statement I and II are independent of each other
(d) Action mentioned in statement I and II are synchronous.

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Conduction in Heart

Standard XII Biology

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