HISTOLOGY
BLOOD VESSELS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What causes the Lub sound?(first sound the heart makes)
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AV valves closing
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SL valves closing
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Ventricles relaxing
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AV valves opening
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Explanation:
Detailed explanation-1: -(a) First heart sound lub is produced due to closure of atrioventricular valves.
Detailed explanation-2: -Due to the closure of the atrio-ventricular valves, dup sound is produced.
Detailed explanation-3: -First heart sound: caused by atrioventricular valves – Mitral (M) and Tricuspid (T). Second heart sound caused by semilunar valves – Aortic (A) and Pulmonary/Pulmonic (P).
There is 1 question to complete.