NEET Previous Year Question
Which one of the following statements is correct?
Topic: NEET PYQ
Answer: D. Full step-by-step solution below.
- AIncreased ventricular pressure causes closing of the semilunar valves
- BThe atrio-ventricular node (AVN) generates an action potential to stimulate atrial contraction
- CThe tricuspid and the bicuspid valves open due to the pressure exerted by the simultaneous contraction of the atria
- DBlood moves freely from atrium to the ventricle during joint diastole.
Correct answer: D
Solution
(d) During joint diastole, as the ventricular pressure declines further, the tricuspid and bicuspid valves are pushed open by the pressure in the atria exerted by the blood which was being emptied into them by the veins. The blood now once again moves freely to the ventricles.More Body Fluids & Circulation PYQs
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