Kinesiology 2222A/B Lecture Notes - Lecture 5: Latissimus Dorsi Muscle, Levator Scapulae Muscle, Shoulder Girdle

• School: Western University
• Department: Kinesiology
• Course: Kinesiology 2222A/B
• Professor: gillian corbo

Document Summary

Trapezius (superficial)- o: external occipital protuberance, nuchal ligament, spinous. I: lateral 1/3 clavicle, acromion, spine of scapula: ax: sup: elevation of scapula mid: retraction of scapula inf: depression of scapula sup & inf: rotation of scapula (fibers work together to rotate glenoid superiorly) Inx: spinal accessory (cnxi) *not from brachial plexus. Latissimus dorsi (superficial) - o: sp of t12-t6, thoracolumbar fascia, ribs 8-12. I: floor of biceptal groove of humerus: ax: extends, adducts & medially rotates arm. Levator scapulae (deep) - o: transverse process c1-c4. I: medial border of scapula, superior to root of scapular spine: ax: elevates scapulae & inferior rotation of glenoid. Inx: dorsal scapular: rhomboid major and minor (deep) - o: (-) spinous process c7-t1 (+) spinous process t2-t5. I: medial border of scapula at: (-) root of scapular spine (+) inferior to scapular. Spine: ax: retracts scapula, inferior rotation of glenoid & fixes scapula to thoracic wall.