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Question

Which one is the correct route through which impulse travels in the heart?
  1. AV node SA node Purkinje fibres Bundle of His Heart muscles.
  2. SA node Purkinje fibres Bundle of His AV node Heart muscles.
  3. AV node Bundle of His SA node Purkinje fibres Heart muscles.
  4. SA node AV node Bundle of His Purkinje fibres Heart muscles.

A
AV node SA node Purkinje fibres Bundle of His Heart muscles.
B
AV node Bundle of His SA node Purkinje fibres Heart muscles.
C
SA node Purkinje fibres Bundle of His AV node Heart muscles.
D
SA node AV node Bundle of His Purkinje fibres Heart muscles.
Solution
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Impulse for contraction starts in the SA node. From there it travels to the AV node. It is then conducted to the Purkinje fibres through the Bundle of His fibres. The Purkinje fibre situated in the lateral walls of the ventricles spread the impulse to the ventricles. Thus the ventricular contraction is initiated. The pressure exerted by the blood pushed into the aortic arteries is recorded as pulse.
So, the correct answer is 'SA nodeAV node Bundle of His

Purkinje fibres Heart muscles.



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Similar Questions
Q1

The cardiac impulse is initiated and conducted further upto ventricle. The correct sequence of conduction of impulse is
(a)SA NodeAV NodePurkinje fiberAV Bundle(b)SA NodePurkinje fiberAV NodeAV Bundle(c)SA NodeAV NodeAV BundlePurkinje fiber(d)SA NodePurkinje fiberAV BundleAV Node

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Q2
Mark the odd one in each of the following series:
Purkinje fibres, AV bundle, AV valve, SA node.

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Q3
Is there any other name that you can give for this set- " Purkinje fibres,A V node,S A node."
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Q4
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.

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Q5
Go through the statements
Statement (I): The AV node and the bundle of His constitute the only electrical link between the atria and the ventricles.
Statement (II): The Bundle of His is a bundle of electrical nodes which allow the ventricles to contract.
Statement (III): The bundle of His is a group of fibres that carry electrical impulses through the centre of the heart
Statement (IV) : The bundle of His is located in the proximal intraventricular septum
How many of the above statements are correct?
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