APPLIED RADIOLOGICAL ANATOMY

Detailed explanation-1: -The pectoralis major is the superior most and largest muscle of the anterior chest wall. It is a thick, fan-shaped muscle that lies underneath the breast tissue and forms the anterior wall of the axilla.

Detailed explanation-2: -pectoralis muscle, any of the muscles that connect the front walls of the chest with the bones of the upper arm and shoulder.

Detailed explanation-3: -The pectoral major may colloquially be referred to as “pecs", “pectoral muscle", or “chest muscle", because it is the largest and most superficial muscle in the chest area.

Detailed explanation-4: -The Anatomy of the Pectoralis Major Muscle You have two pectoralis majors or “pecs, ‘’ one on each side of your chest. These large muscles help you move your shoulder. These muscles help pull your arm across the front of your body.

Detailed explanation-5: -The pectoralis major muscle is a triangular muscle with origins on the clavicle, sternum, ribs, and external oblique fascia. It functions as primarily a humerus adductor and internal rotator, and the clavicular head can also assist with shoulder flexion (Provencher et al. 2010).