The pectoralis major's primary functions are flexion, adduction, and internal rotation of the humerus. The pectoral major may colloquially be referred to as "pecs", "pectoral muscle", or "chest muscle", …

Pectoralis muscle, any of the muscles that connect the front walls of the chest with the bones of the upper arm and shoulder. There are two such muscles on each side of the sternum (breastbone) in …

The pectoralis major is the most superficial muscle in the pectoral region. There are 2 heads of the pectoralis major, the clavicular and the sternocostal, which reference their area of origin.

May 5, 2023 · The pectoralis major is a large, triangular, or fan-shaped superficial muscle lying at the anteriormost position in the chest cavity. It forms the front wall of the axilla, making up most of the …

Nov 3, 2023 · The pectoralis major muscle is a broad superficial muscle found superficially in the anterior chest wall. In males, it is covered by the deep layer of fascia, subcutaneous tissue and the …

Nov 6, 2025 · It contains four muscles that exert a force on the upper limb: the pectoralis major, pectoralis minor, serratus anterior and subclavius. In this article, we shall look at the anatomy of the …

2 days ago · The pectoralis major, a fan-shaped muscle spanning the chest, is the powerhouse behind arm adduction and horizontal flexion. This muscle, often associated with a well-defined chest, plays a …

Explore the Pectoralis Major — including its structure, location, and function in the human body.

The pectoralis major (Latin: musculus pectoralis major) is a paired thick, fan-shaped thoracic wall muscle that provides movements of the upper limb.

Mar 31, 2024 · The pectoralis major is a powerful chest muscle that causes the arm to move forward, rotate inward and move closer to the body. The muscle originates from two points: the sternum …