ventral sacrococcygeus (muscle)

ven·tral sa·cro·coc·cyg·e·us (mus·cle)

an inconstant muscle on the pelvic surfaces of the sacrum and coccyx, the remains of a portion of the tail musculature of lower animals. Synonym(s): musculus sacrococcygeus anterior, musculus sacrococcygeus ventralis, ventral sacrococcygeal muscle