Origin of heart beat and its conduction is represented by

A V node - Bundle of His - SA node - Purkinje fibres

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SA node - Purkinje fibres - AV node - Bundle of His

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Purkinje fibres - AV node - SA node - Bundle of His

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SA node - AV node - Bundle of His - Purkinje fibres

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Solution

The correct option is D
SA node - AV node - Bundle of His - Purkinje fibres

The pumping of the heart, or the heartbeat, is caused by alternating contractions and relaxations of the myocardium. These contractions are stimulated by electrical impulses from a natural pacemaker, the sinoatrial, or S-A, node located in the muscle of the right atrium.

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Similar questions

The cardiac impulse is initiated and conducted further upto ventricle. The correct sequence of conduction of impulse is
$\begin{matrix} (a) & S A N o d e & A V N o d e & P u r k i n j e f i b e r & A V B u n d l e (b) & S A N o d e & P u r k i n j e f i b e r & A V N o d e & A V B u n d l e (c) & S A N o d e & A V N o d e & A V B u n d l e & P u r k i n j e f i b e r (d) & S A N o d e & P u r k i n j e f i b e r & A V B u n d l e & A V N o d e \end{matrix}$

Q. Mark the odd one in each of the following series:
Purkinje fibres, AV bundle, AV valve, SA node.

Give these structure of the conduction system of the heart :
1. It is Atrioventricular bundle
2. AV node
3. Bundle branches
4. Purkinje fibres

5. SA node
Choose the arrangement that lists the structures in an order of an action potential passes through them.

Q. Is there any other name that you can give for this set- " Purkinje fibres,A V node,S A node."

Define the following terms and give their location?

(i) Purkinje fibre

(ii) Bundle of His

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