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 …

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.

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 …

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 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 subclavius.

There are two such muscles on each side of the sternum (breastbone) in the human body: pectoralis major and pectoralis minor. The pectoralis major, the larger and more superficial, originates at the …

3 days ago · The muscle primarily responsible for pulling the arm forward and across the chest is the pectoralis major, often referred to as the pecs. Located in the chest region, this large, fan-shaped …

Explore the comprehensive anatomy of the pectoralis major muscle, its origin, insertion, actions, and clinical correlations.

Sep 8, 2025 · Learn the anatomy of the Pectoralis Major muscle—covering origin, insertion, function, innervation, and clinical insights. Anatomy Breakdown by Treadwell, DPT.

Description: The Pectoralis major is a thick, fan-shaped muscle, situated at the upper and forepart of the chest.