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Doctors use stethoscope to hear the sounds produced during each cardiac cycle.The second sound is heard when:
Options
(a) Ventricular wall vibrate due to gushing in of blood from atria
(b) Semilunar valves close down after the blood flows into vessels from ventricles
(c) AV node receives signal from SA node
(d) AV valves open up
Correct Answer:
Semilunar valves close down after the blood flows into vessels from ventricles
Explanation:
No explanation available. Be the first to write the explanation for this question by commenting below.
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Topics: Human Body Fluids and Excretory Products
(197)
Subject: Biology
(4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Which one of the following structures in Pheretima is correctly matched with its function?
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- Biradial symmetry and lack of cnidoblasts are the characteristics of
- Which one of the following is the characteristic of epithelial tissues
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Subject: Biology (4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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