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Chest/Shoulder/upper
Term | Definition |
---|---|
Brachialis Origin | Distal lateral end of humerous |
Brachialis Action | Flexes Elbow |
Coracobrachialis Origin | Coracoid process of scapula |
Coracobrachialis Action | Flexes an adducts the arm |
Deltoid Origin | Acromion and spine of the scapula and the clavicle |
Deltoid Action | Abducts, extends, and flexes arm |
Flexor carpi ulnaris Origin | Flexes wrist and abducts hand |
Infraspinatus Action | Rotates arm laterally |
Infraspinatus Origin | Inffraspinous fossa of scapula |
Pectoralis major Origin | Clavicle sternum and costal cartilages of upper ribs |
Pectoralis major Action | flexes adducts and rotates arm medially |
Pectoralis minor Origin | Sternal ends of ribs 3-5 |
Pectoralis minor Action | Pulls scapula forward and downward; raises ribs |
Serratus anterior Origin | Lateral surfaces of most ribs |
Serratus anterior Action | Pulls scapula anteriorly (protracts scapula) |
Teres major Origin | Lateral border of scapula |
Teres major Action | Extends, adducts and rotates arm medially |
Triceps brachii Action | Extends elbow |
Triceps brachii Origin | lateral and medial surfaces of humerus |
Biceps brachii Action | Flexes elbow and supinates forearm and hand |
Trapezuis Action | Rotates scapula; various fibers raise scapula, pull scapula medially, or pull scapula and shoulder downward |
Latissimus dorsi Action | Extends, adducts, and rotates the arm medially |
Latissimus dorsi Origin | spinous processes of lumbar and lower thoracic vertebrae, illiac crest, and lower ribs |