BIOL 2P95 Lecture Notes - Glenoid Labrum, Trapezius Muscle, Infraspinatus Muscle

• School: Brock University
• Department: Biological Sciences
• Course: BIOL 2P95
• Professor: Dirk De Clercq

Document Summary

Ii: general arrangement of bones from proximal to distal is similar, same joint types (shoulder/hip=ball & socket; elbow/knee=hinge; wrist/ankle=plane, phalanges=hinge, compartmentalization of muscles with single nerve per compartment & 1- 2 major fxns of compartment: nerves originate off plexuses (brachial/lumbosacral); w/ largest nerve posterior (sciatic/radial, differences, rotation during development: upper external 45 . Lower internal 90 : elbow & knee flex in opposite directions, palm=anterior; sole=posterior, function differences. Hand=generalized for diff. movements foot=specialized for wt. support. 1: liagments, coracoclavicular (2) coracoid process to inf. Clavicle: acromioclavicular acromion to clavicle tip, coracoacromial provides roof for joint, shoulder separation: dislocation of clavicle from scapula, shoulder joint (glenohumeral, most commonly dislocated in body & most mobile joint joint is held away from trunk via shoulder girdle. 1: only bone-to-bone contact is sternoclavicular joint, glenoid fossa is almost flat => humeral head not constrained.