Given what we know, we can confirm that the muscles in charge of preventing the atrioventricular valves from everting during ventricular contraction are the papillary muscles.
What do we know about the papillary muscles?
- They are located along the walls of the ventricles.
- They are numerous and some are larger than others.
- The largest of these possess the chordae tendinae, which attach them to the AV valves.
- Due to this, the contraction of these muscles will pull on the valves and ensure that they do not evert, preventing the backward flow of blood.
Therefore, given that the papillary muscles are located along the walls of the ventricles and are attached to the valves via the chordae tendinae, we can confirm that these are the muscles that prevent the atrioventricular valves from everting during ventricular contraction.
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