Health Sciences 2300A/B Lecture Notes - Lecture 6: Aponeurosis, Abductor Pollicis Longus Muscle, Vestigiality

• School: Western University
• Department: Health Sciences
• Course: Health Sciences 2300A/B
• Professor: Gillian Gabriela Corbo

Document Summary

Transitional areas of the upper limb: area of passage for nerves and blood vessels to get to different regions, axilla, cubital fossa, carpal tunnel. What do these muscles do: anchor pectoral girdle to axial skeleton, all act on the scapula (except subclavius, pectoralis major, and. Posterior superficial: o: external occipital protuberance, nuchal ligament, spinous process c7-t12. I: lateral 1/3 clavicle, acromion, spine of scapula. Function: superior elevation of scapula, middle retraction of scapula, sup & inf rotation of scapula (work together to rotate. Latissimus dorsi (superficial: o: sp of t12-t6, thoracolumbar fascia, ribs 8-12. Levator scapulae (deep: o: transverse process c1-c4. I: medial border of scapula, superior to root of. Fn: elevates scapulae & inferior rotation of glenoid. Rhomboid major & 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.