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Question

The thread like tendons of papillary muscles inserted upon the flaps of tricuspid and bicuspid valves are called:

A
Chordae tendinae
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B
Yellow elastin fibres
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C
Reticulate fibres
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D
Collagen fibres
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Solution

The correct option is A Chordae tendinae
The chordae tendineae (tendinous cords), known as the heart strings, are tendon-resembling fibrous cords of connective tissue. The chordae tendineae connect the atrioventricular valves to the papillary muscles within the ventricles. Multiple chordae tendineae attach to each leaflet of each flap of the valves.

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