MEDICAL
HEART AND PERICARDIUM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The function of chordae tendineae (heart strings) is ____
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assist in ventricle contraction
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holding the atrioventricular valves in place while the heart is pumping blood.
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move blood to the lungs
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reoxygenate blood
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Explanation:
Detailed explanation-1: -To prevent the valves from blowing out under the extremely high blood pressure within the ventricles, the chordae tendineae hold the cusps of each AV valve on the ventricular side. Once filled with blood, the AV valves form a dome shape and resemble tiny parachutes with the chordae tendineae acting as the strings.
Detailed explanation-2: -The chordae tendineae, along with papillary muscle hold the flaps, or cusps, of each valve in place. When the ventricles contract, pressure gradients across the valves pull the cusps of the mitral and tricuspid valves shut.
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