MEDICAL
HEART AND PERICARDIUM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which structure is responsible for carrying conduction signals to papillary muscles of the heart and preventing over overdistention (stretching) of ventricles?
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Ligamentum arteriosum
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Moderator band
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AV valves
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Myocardium
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Explanation:
Detailed explanation-1: -The function of the MB is to contract the APM to prevent the tricuspid regurgitation through tension of the chordae tendineae.
Detailed explanation-2: -The papillary muscles are “nipple” like projections of the myocardia and contract when the myocardia contracts. As a result, they pull on the chordae tendinae and help to prevent prolapsing of the AV valves. The chordae tendinae and the papillary muscles occur in both the left and right ventricles.
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