Prab at 13:05, 18 March 2025

2025-03-18T13:05:15Z

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'''Pectoral''' refers to the chest area of the body. It is derived from the Latin word 'pectus' which means 'chest'. The term is commonly used in anatomy to refer to the muscles in the chest area, specifically the [[Pectoralis major muscle|Pectoralis major]] and the [[Pectoralis minor muscle|Pectoralis minor]].

== Anatomy ==

The pectoral region is located on the anterior chest wall. It is made up of two muscles: the Pectoralis major and the Pectoralis minor.

=== Pectoralis Major ===

The [[Pectoralis major muscle|Pectoralis major]] is a thick, fan-shaped muscle that makes up the bulk of the chest muscles. It originates from the clavicle (collar bone), the sternum (breast bone), the ribs, and the [[Fascia|fascia]] covering the [[External oblique muscle|external oblique muscle]]. The fibers converge to insert at the [[Humerus|humerus]] (upper arm bone). It is responsible for the movement of the shoulder joint.

=== Pectoralis Minor ===

The [[Pectoralis minor muscle|Pectoralis minor]] is a thin, triangular muscle located beneath the Pectoralis major. It originates from the third, fourth, and fifth ribs and inserts at the [[Scapula|scapula]] (shoulder blade). It aids in the movement of the scapula.

== Function ==

The pectoral muscles play a key role in the movement and stability of the shoulder joint. The Pectoralis major helps in the flexion, adduction, and medial rotation of the humerus, thus enabling the arm to move across the body. The Pectoralis minor helps in stabilizing the scapula.

== Clinical Significance ==

Injuries to the pectoral muscles are relatively rare but can occur due to excessive strain or direct trauma. Such injuries can result in pain, swelling, and limited range of motion. Treatment usually involves rest, physical therapy, and in severe cases, surgery.

[[Category:Anatomy]]
[[Category:Muscular system]]

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Pectoral - Revision history

Prab at 13:05, 18 March 2025

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