Pectoralis Major: Origin, Insertion, Action, Innervation, Diagram
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 …
Muscles of the Pectoral Region - Major - Minor - TeachMeAnatomy
Nov 6, 2025 · There are three muscles that lie in the pectoral region and exert a force on the upper limb. They are the pectoralis major, pectoralis minor, and the serratus anterior.
Pectoralis major: Origin, insertion, innervation,function | Kenhub
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 - Wikipedia
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.
Pectoralis muscle | Definition, Location, Function, & Facts | Britannica
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 major - Physiopedia
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 …
Pectoralis Major - Structure, Function & Location
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 …
Pectoralis major muscle - Structure, Function and Location
It is a broad, triangular muscle that originates from the sternum, clavicle, and the outer surfaces of the ribs. It inserts into the humerus bone of the upper arm. The muscle is located just beneath the skin …
Pectoralis Pectoralis Major — ANATOMY LAB
The pectoralis major muscle is a significant and powerful muscle of the chest, with distinct origins, insertions, muscle path, and functions. Its role in shoulder and arm movements, as well as its …
Pectoralis Major: Anatomy, Function, Exercises, Origin & Insertion
Explore the anatomy, origin, function, and insertion of the pectoralis major. Learn exercises to build chest strength with detailed muscle illustrations.