Biology · Human Physiology

Which one of the following statements is correct?

Verified Solution4 OptionsUpdated: October 2026👁️1 View

1Blood moves freely from atrium to the ventricle during joint dias tole.✓
2The tricuspid and the bicuspid valves open due to the pressure exerted by the simultaneous contraction of the atria
3The atrio-ventricular node (AVN) generates an action potential to stimulate atrial contraction
4Increased ventricular pressure causes closing of the semilunar valves.

Correct answer

Blood moves freely from atrium to the ventricle during joint dias tole.

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