KINE 2031 Lecture Notes - Ulna, Mechanical Advantage, Infraspinatus Muscle

• School: York University
• Department: Kinesiology & Health Science
• Course: KINE 2031
• Professor: all

Document Summary

It"s found above the scapula o o: comes from the transverse process then down to the scapula, fiber direction downward, when it contracts elevates the scapula o then you will have lateral flexion to the head. If your scapula was locked in and fixed, when this muscle contracts on one side, Movements of the scapula: upward rotation shoulder joint, trapezius, abduction, rhomboid and trapezius, elevation, levator scapula, trapezius, little bit of rhomboid, depression, lower fibers of the trapezius, serratus antrior. Pectoralis minor: rib number 1 to 5, close to the coastal cartilage - hook anterior side of the shoulder joint, powerful depressor, medial rotated of the shoulder joint, chopping muscle. Rotator cuff muscles: muscles collectively called the guardians of the shoulder, anterior head can do a little bit of rotation but the above mentioned are their main functions, anterior and posterior together - stabilize or abduction. Insertion of biceps brachii radius: triceps, posterior side, three heads, long head - superior.