Teres major
Teres Major
Teres Major (/tɛrɪs ˈmeɪdʒər/) is a muscle of the upper limb and one of the seven scapulohumeral muscles. It is a thick and ovoid muscle in the upper arm. Despite their similar names, the Teres Major and Teres minor are not the same muscle.
Etymology
The name comes from the Latin words 'teres' meaning 'round' and 'major' meaning 'larger'. It is named so because of its rounded shape and its size compared to the Teres minor muscle.
Function
The Teres Major muscle is responsible for medial rotation and adduction of the arm at the shoulder joint. It also helps in extending the arm from a flexed position.
Related Terms
- Scapulohumeral muscles: The group of muscles associated with movements of the shoulder joint.
- Teres minor: A narrow, elongated muscle of the shoulder joint.
- Shoulder joint: The main joint of the shoulder, it is a ball and socket joint that allows the arm to rotate in a circular fashion or to hinge out and up away from the body.
- Medial rotation: A rotational movement towards the midline.
- Adduction: Movement of a body part toward the body's midline.
See Also
External links
- Medical encyclopedia article on Teres major
- Wikipedia's article - Teres major
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