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Stack #53994
Brachium muscles
| Muscle | Origin | Insertion | Action |
|---|---|---|---|
| Pectoralis major | clavicle, sternum, cartilages of r's 1-6 | intertubercular groove of humerus | flexes, adducts, and rotates humerus medially |
| Latissimus dorsi | SP's of lumbar and inferior thoracic vertebrae, iliac crest & R's 9-12 | intertubercular groove of humerus | extends, adducts, & rotates humerus medially |
| Deltoid | clavicle, acromion process. spine of scapula | deltoid tuberosity of humerus | abducts, extends, and flexes humerus |
| Supraspinatus | supraspinous fossa of scapula | greater tubercle of humerus | abducts humerus |
| Infraspinatus | infraspinous fossa of scapula | greater tubercle of humerus | rotates humerus laterally |
| Teres major | inferior angle & lateral border of scapula | intertubercular groove of humerus | extends, adducts & rotates humerus medially |
| Teres minor | lateral border of scapula | gr. tubercle of humerus | rotates humerus laterally |
| subscapularis | subscapular fossa | lesser tubercle of humerus | rotates humerus medially |
| Coracobrachialis | coracoid process of scapula | medial shaft of the humerus | flexes and adducts humerus |