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.

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 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.

Oct 25, 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 …

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 …

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 …

Sep 16, 2025 · Injuries to the pectoralis muscle are relatively uncommon but may occur in athletes and active adults. While activities of daily living can be performed without an intact …

Aug 15, 2018 · What is the function of the pectoralis in the muscular system? The pectoralis major contracts to pull on the humerus to produce lateral, vertical, or rotational motion, which is …

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 …

It also draws the scapula anteriorly and inferiorly. Description: The Pectoralis major is a thick, fan-shaped muscle, situated at the upper and forepart of the chest.