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Contraction of the ventricle in the hear...

Contraction of the ventricle in the heart begins by the command from

A

Chordae tendinae

B

SA node

C

Purkinje fibres

D

AV Node

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The correct Answer is:
B
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Contraction of right ventricle pumps blood into

Read the following statements : A. The action potential generated by the SA node stimulates both ventricles to undergo simultaneous contraction. B. The heart sound Lubb is associated with the closure of both semilunar valves. C. The QRS complex in ECG represents the depolarization of the ventricles. Select the appropriate option from the following :

Left ventricle is the thickest chamber of the heart.

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