Kinesiology 2222A/B Lecture Notes - Lecture 6: Dorsal Scapular Nerve, Latissimus Dorsi Muscle, Levator Scapulae Muscle

• School: Western University
• Department: Kinesiology
• Course: Kinesiology 2222A/B
• Professor: Gillian Corbo

Document Summary

Posterior: levator scapulae, trapezius, superficial, rhomboid minor, superficial, rhomboid major, superficial, latissimus dorsi, superficial. Anterior: subclavius, pectoralis minor, pectoralis major, superficial, serratus anterior. Brachial plexus: nerve to subclavius, superior trunk, dorsal scapular nerve, c5 root, lateral pectoral nerve, lateral cord, medial pectoral nerve, medial cord, thoracodorsal nerve, posterior cord. Trapezius (superficial: o: external occipital protuberance, nuchal ligament, spinous process c7-t12, ax: I: lateral 1/3 clavicle, acromion, spine of scapula: sup: elevation of scapula, mid: retraction of scapula, inf: depression of scapula, super & inf: rotation of scapula (fibers work together to rotate. Inx: spinal accessory (cnxi: not from brachial plexus, * think of superior, middle & inferior fibers as 3 separate muscles, different directions of fibers. I: floor of biceptal groove of humerus: o: sp of t12-t6, thoracolumbar fascia, ribs 8-12, ax: extends, adducts & medially rotates arm, *known as the swimmer"s muscle* Inx: thoracodorsal: all 3 of those actions against resistance, moves anterior -> posterior.