pectoralis minor (muscle)


pec·to·ra·lis mi·nor (mus·cle)

[TA] deep thoracoappendicular muscle of chest; origin, third to fifth ribs at the costochondral articulations; insertion, tip of coracoid process of scapula; action, draws down scapula or raises ribs; nerve supply, medial pectoral nerve. Synonym(s): musculus pectoralis minor [TA], smaller pectoral muscle