Multiple choice

The function of chordae tendineae is to

  1. open the atrioventricular

  2. open the semi-lunar valves

  3. give support to the septum

  4. prevent valves in the heart from inverting

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Chordae tendineae are fibrous cords connecting atrioventricular valve cusps to papillary muscles in the ventricles. They prevent valve inversion (prolapse) when ventricles contract, ensuring unidirectional blood flow. Without them, high ventricular pressure would force valves back into atria, causing regurgitation. They do not open valves or support the septum.