BLG 700 Lecture Notes - Lecture 12: Extensor Carpi Ulnaris Muscle, Flexor Carpi Radialis Muscle, Flexor Carpi Ulnaris Muscle
Document Summary
Muscles of the pectoral girdle and upper limb; and muscles of pelvic girdle and lower limb. Escaped fluid cannot escape and pressure rises within affected compartments. Pressure compresses regional blood vessels produces ischemia. Eliminating circulatory supply to muscles and nerves of compartment: nerves destroyed after 2-4 hours, muscles after 6 hours. Pectoral girdle and upper limb muscles (fig 11. 3-11. 15, table 11. 1-11. 6) Muscles that position the pectoral girdle, move the arm, move the forearm and hand, move the hand and fingers. Move and/or fixate scapula permitting wide range of movements of upper limbs trapezius = large triangular muscle covering back and portions of muscular ridge in superficial posterior part of neck. Origin = occipital protuberance, nuchal ligament and spinous processes of c7-t-12; insertion = clavicle, acromion process and scapular spine innervated by more than one nerve allowing specific regions of muscle to contract independently allowing varied actions.
