. "papillary muscle"^^ . "any of several muscles associated with the atrioventricular valves; \"the papillary muscles contract during systole to prevent regurgitation of blood into the atria\""@en-us . "0"^^ . . . . "105082579"@en-us . . . . . "05390233-n"^^ . "papillary muscle"@en-us . . "0"^^ . . . . "105390233"^^ .