Anatomy and Cell Biology 3319 Lecture Notes - Lecture 2: Fasciotomy, Radial Sulcus, Radial Nerve
6 Mar 2016
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Adduction (as in arm is out horizontally and moving it toward the midline of the body, or bring fingers and toes together) Abduction (as in arm is by your side and move it out away from the midline of the body, or spread fingers and toes apart) Medial rotation (as in arm at 90 degrees and rotate toward stomach) Lateral rotation (as in arm at 90 degrees and rotate from the stomach outward) Circumduction (move your arm in a circle motion) Pronation (turn arm to show the back of hand) Describe the 9 muscles that cross the shoulder joint and move the arm, their attachments, functions, and innervations (missing are the 4 rotator cuff muscles covered in lecture 1) Coracobrachialis: origin is at the tip of the coracoid process of the scapula; insertion is at the middle 3rd of the medial humerus; action is to flex and adduct the arm; innervated by the musculocutaneous nerve.
