APA 1313 Lecture Notes - Lecture 8: Levator Scapulae Muscle, Pronator Teres Muscle, Shoulder Joint

• School: University of Ottawa
• Department: Human Kinetics
• Course: APA 1313
• Professor: Jing L I

Document Summary

Pectoralis major - adducts and medial rotates shoulder joint. Serratua anterior - protects scapula and holds against thoracic wall. Latissimus dorsi - extends, adducts, and medial rotates shoulder join, powerful adductor and extensor of the arm. Levator scapulae - elevates and tits its glenoid cavity (rotates scapula) Rhomboids - retract and rotate scapula to depress glenoid cavity. Deltoid - anterior - exes and medially rotates shoulder joint medial - abducts shoulder joint posterior - extends and laterally rotates shoulder joint. Teres major - adducts and medially rotates arm. Rotator cuff - supraspinatus - initiates and assists deltoid in abduction of shoulder joint. Infraspinatus and teres minor - laterally rotates shoulder joint ; holds humeral head. Subscapularis - medially rotates and abducts shoulder joint. Bicep brachii - exes forearm when elbow extended; supinates forearm when elbow is exed or pronated. Coracobrachialis - help to ex and adduct arm.