Search Result for "serratus posterior inferior":
Wordnet 3.0

NOUN (1)

1. a thin quadrilateral muscle at the junction of the thoracic and lumbar regions; acts to counteract the pull of the diaphragm on the ribs to which it is attached; 



WordNet (r) 3.0 (2006):

serratus posterior inferior
    n 1: a thin quadrilateral muscle at the junction of the thoracic
         and lumbar regions; acts to counteract the pull of the
         diaphragm on the ribs to which it is attached