NCIt definition : A large muscle of the axial skeleton, with origin from the first through the eighth
or ninth rib, and insertion on the scapula, which is responsible for multiple arm
movements, including anteversion of the arm, protraction of the scapula, and stabilization
of the scapula against the thoracic wall.;
Alternative definition : CDISC: A muscle of the thorax, in general extending from the first through the eighth
or ninth rib to the scapula; primary function is anteversion of the arm, protraction
of the scapula, and stabilization of the scapula against the thoracic wall.;