Pectoralis
Pectoralis
Pectoralis (/pɛktəˈreɪlɪs/), often referred to as the pecs, is a term used to describe two large muscles in the chest of the human body. The term is derived from the Latin word 'pectus', which means 'chest'.
Etymology
The term 'Pectoralis' is derived from the Latin word 'pectus', which translates to 'chest'. This is indicative of the location of these muscles in the human body.
Pectoralis Major
The Pectoralis Major is a thick, fan-shaped muscle, situated at the chest (anterior) of the human body. It makes up the bulk of the chest muscles and lies under the breast. The pectoralis major's primary functions are flexion, adduction, and internal rotation of the humerus.
Pectoralis Minor
The Pectoralis Minor is a thin, triangular muscle, located deep to the pectoralis major. It attaches to the ribs and the scapula, aiding in the movement of the shoulder and breathing.
Related Terms
- Muscle: A tissue composed of cells or fibers, the contraction of which produces movement in the body.
- Humerus: The bone of the upper arm or forelimb, forming joints at the shoulder and the elbow.
- Scapula: Also known as shoulder blade, is the bone that connects the humerus (upper arm bone) with the clavicle (collar bone).
- Chest: The front surface of a person's or animal's body between the neck and the abdomen.
See Also
External links
- Medical encyclopedia article on Pectoralis
- Wikipedia's article - Pectoralis
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