Question

An abnormal sound of the heart which is heard when the mitral valve leaflets and chordae tendineae tense is referred to as:

Answer 1

It is caused by the closure of the atrioventricular valves, i.e. tricuspid and mitral (bicuspid), at the beginning of ventricular contraction, or systole. The papillary muscles are attached to the cusps or leaflets of the tricuspid and mitral valves via chordae tendineae (heart strings).

Answer 2

This sound is the 'lub dub' sound caused by the closure of the tricuspid and bicuspid valves, at the beginning of systolic contraction. The muscles that are attached to the cusps or leaflets of the tricuspid and mitral valves by the chordae tendineae. It also involves the coronary artery which supplies blood to the heart walls.