Subscapularis
Subscapularis
Subscapularis (/sʌb.skæ.pjuːˈleɪ.rɪs/) is a large triangular muscle located in the shoulder, specifically in the subscapular fossa of the scapula. It is one of the four muscles that make up the rotator cuff, which stabilizes the glenohumeral joint.
Etymology
The term "subscapularis" is derived from Latin, with "sub" meaning under and "scapula" referring to the shoulder blade. Thus, "subscapularis" essentially means "under the shoulder blade".
Function
The primary function of the subscapularis muscle is to medially rotate the arm. It also helps to hold the humerus, the long bone in the upper arm, in place during movement, preventing displacement.
Related Terms
- Rotator cuff: A group of muscles and tendons that surround the shoulder joint, providing stability and enabling a wide range of shoulder movements.
- Glenohumeral joint: The ball and socket joint of the shoulder, which allows for a wide range of motion.
- Scapula: Also known as the shoulder blade, it is the bone that connects the humerus (upper arm bone) with the clavicle (collar bone).
- Humerus: The long bone in the upper arm or forelimb that runs from the shoulder to the elbow.
See Also
External links
- Medical encyclopedia article on Subscapularis
- Wikipedia's article - Subscapularis
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