<Tr> <Th> TA </Th> <Td> A12. 1.00. 022 </Td> </Tr> <Tr> <Th> FMA </Th> <Td> 76526 </Td> </Tr> <Tr> <Td_colspan="2"> Anatomical terms of muscle (edit on Wikidata) </Td> </Tr> <P> The papillary muscles are muscles located in the ventricles of the heart . They attach to the cusps of the atrioventricular valves (also known as the mitral and tricuspid valves) via the chordae tendineae and contract to prevent inversion or prolapse of these valves on systole (or ventricular contraction). The papillary muscles constitute about 10% of the total heart mass . </P>

Where are the papillary muscles of the heart and what do they look like