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Biology · PYQ NEET UG 2022

हिन्दी

Which one of the following statements is correct?

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

Correct answer · Option 1

Blood moves freely from atrium to the ventricle during joint diastole.

Explanation

During joint diastole, blood flows freely from atria into the ventricles through the AV valves due to a pressure gradient.

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हमारा मिशन है – "विद्यार्थियों को शिक्षित करना और उन्हें प्रतिस्पर्धी परीक्षाओं की तैयारी में उनकी पूर्ण क्षमता के साथ उत्कृष्टता प्राप्त करने में सहायता करना। साथ ही उनमें अच्छे संस्कारों का संचार करना और उनके व्यक्तित्व का विकास करना।"

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