HN210 Lecture Notes - Lecture 4: Latissimus Dorsi Muscle, Corticosteroid, Serratus Anterior Muscle
Document Summary
Origin is of the 2 attachment it is always the proximal attachment. Insertion: coracoid process (med border and superior surface) It is not a major mover of this region because it is no crossing any major movement joints, it is a stabilizing muscle. A: stabilizes scapula (draw it inferior and anteriorly against thoracic wall) When the nerve fires it can contract these muscles. When you have muscles work together to cause and action it is cause a synergy. Why do we retract shoulder for pec training. To cause stretching and retraction of pectoralis minor so it is at its normal resting state. Only one muscle on the anterior wall of axilla. O: finger like slips from out surface to the upper 8 ribs. I: costal surface of medial border of scapula. Wraps around the ribs to the medial border to the scapula. Active during a punching movement or reaching for something.
