<Tr> <Th> FMA </Th> <Td> 76527 </Td> </Tr> <Tr> <Td_colspan="2"> Anatomical terminology (edit on Wikidata) </Td> </Tr> <P> The chordae tendineae (tendinous cords), colloquially known as the heart strings, are tendon - resembling fibrous cords connective tissue that connect the papillary muscles to the tricuspid valve and the bicuspid valve in the heart . </P> <P> Chordae tendineae are approximately 80% collagen, while the remaining 20% is made up of elastin and endothelial cells . </P>

What muscle attach to the chordae tendineae to hold the valves in place