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Question

The fibres of atrio-ventricular bundle are highly contractile and conducts a ___


A

Rapid impulse

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B

Slow impulse

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C

contraction

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D

relaxation

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Solution

The correct option is B

Slow impulse


In the AV node, the impulses are slowed down for a very short period which allows the atria to contract a fraction of a second before the ventricles. The blood from the atria empties into the ventricles before the ventricles contract.


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