Scapula and Shoulder- Medial Muscles.txt

Card Set Information

Author:
Mawad
ID:
280961
Filename:
Scapula and Shoulder- Medial Muscles.txt
Updated:
2014-08-20 14:36:26
Tags:
Scapula Canine
Folders:

Description:
Origin, Insertion, Action, Innervation.
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  1. Subscapularis
    • Origin- The subscapular fossa.
    • Insertion- The lesser tubercle (humerus).
    • Action- To adduct, extend, and medially stabilize the shoulder joint; to medially rotate the shoulder, to prevent lateral rotation when weight-bearing.
    • Innervation- Subscapular nerve.
  2. Teres major
    • Origin- The caudal angle and adjacent causal border of the scapula; the caudal surface of the subscapularis.
    • Insertion- The teres major tuberosity (humerus).
    • Action- To flex the shoulder; to rotate the shoulder medially; to prevent lateral rotation when weight0bearing.
    • Innervation- Axillary nerve.
  3. Coracobrachialis
    • Origin- The coracoid process (scapula).
    • Insertion- The crest of the lesser tubercle (humeru) proximal to the teres major tuberosity.
    • Action- To adduct, extend, and stabilize the shoulder joint.
    • Innervation- Musculocutaneous nerve.

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