HLSC 2F95 Lecture Notes - Lecture 6: Teres Major Muscle, Pronator Quadratus Muscle, Clavicle

• School: Brock University
• Department: Health Sciences
• Course: HLSC 2F95
• Professor: dr.macpherson

Document Summary

Sternoclavicular: gliding/planar diarthrosis, only attachment between axial and appendicular skeleton. Acromioclavicular: gliding/planar diarthrosis, 3 types of separation. 3- tear of both acromioclavicular and coracoclavicular ligaments. Glenohumeral: ball and socket diarthrosis ligaments: Appendicular muscles: stabilize pectoral and pelvic girdles, moving upper and lower limbs, absorbing shocks and jolts when you walk, run, jump, strengthening joint areas. Deltoid (entire muscle: abduction at shoulder. Scapular deltoid: extension of shoulder and lateral rotation of humerus. Clavicular deltoid: flexion at shoulder and medial rotation of humerus. Triceps brachi: extension and adduction at shoulder. Muscles originate on the humerus and insert upon the forearm and wrist. Exceptions: long head of triceps brachii (originate on ingraglenoid tubercle, biceps brachii (long head originates on supraglenoid tubercle, short head originates on the coracoid) Triceps brachii long head (extension and adduction at shoulder) Supinator, pronator teres, pronator quadratus are responsible for supination and pronation. Flexor retinaculum (transverse carpal ligament)- carpal tunnel.