NCIt definition : Either of two small, triangular, bilateral muscles located inferior the pectoralis
major muscle, which originate from the third to fifth ribs near their costal cartilages
and inserting on the medial border and superior surface of the coracoid process of
the scapula, and which function to stabilize the scapula against the thoracic wall.;
Alternative definition : CDISC: A muscle in the chest, in general extending from the third to fifth ribs near
their costal cartilages to the medial border and superior surface of the coracoid
process of the scapula; primary function is to stabilize the scapula against the thoracic
wall.;