The pectoralis minor is a small muscle located in the chest region, beneath the pectoralis major muscle. This muscle plays an important role in stabilizing the scapula and assists in movements of the shoulder girdle. While there are no direct synonyms for the term "pectoralis minor," there are related terms that may be used to refer to this muscle. These include the "minor pectoral muscle," "subclavius muscle" or "underneath the clavicle muscle." In medical literature, this muscle may also be referred to by its Latin name "musculus pectoralis minor." Overall, the pectoralis minor is an important muscle in the human body, and its proper functioning is critical for the optimal performance of various upper body movements.