The pectoralis major (from Latin pectus ' breast ') is a thick, fan-shaped or triangular convergent muscle of the human chest. It makes up the bulk of the chest muscles and lies under the breast. Beneath the …

May 5, 2023 · What is the Pectoralis Major 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 …

Nov 3, 2023 · The pectoralis major is a prominent chest muscle that acts mainly on the shoulder joint. Learn the anatomy of the "pecs" now at Kenhub!

Nov 6, 2025 · The pectoral region is located on the anterior chest wall. It contains four muscles that exert a force on the upper limb: the pectoralis major, pectoralis minor, serratus anterior and …

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 …

Pectoralis minor is a thin, triangular muscle located beneath the pectoralis major. It attaches to the ribs, and serves to stabilize the scapula, the large bone of the shoulder. The pectoral fascia is a thin layer …

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 [1]. The …

Nov 6, 2025 · The pectoralis major is a muscle of the anterior chest wall. It is a large fan-shaped muscle, which is composed of a sternal head and a clavicular head.

Jun 8, 2026 · The pectoralis major muscle is also known as the 'pecs' or 'chest muscle'. Learn its origin, insertion, action and more at Bodyworks Prime.

The pectoralis major is a large, fan-shaped, superficial muscle located on the anterior chest wall. It is one of the most powerful muscles of the upper body and plays a primary role in movements of the …