Papillary muscles are found in mammalian

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(B) The papillary muscles are muscles located in the ventricles of the heart. They attach to the atrioventricular valves (tricuspid and mitral valves)

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Ventricles

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(B) The papillary muscles are muscles located in the ventricles of the heart. They attach to the atrioventricular valves (tricuspid and mitral valves) via the chordae tendineae. During ventricular contraction,these muscles contract to prevent the inversion or prolapse of these valves into the atria,ensuring unidirectional blood flow.

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