BIOL 030 Lecture Notes - Lecture 15: Suprascapular Notch, Glenohumeral Ligaments, Suprascapular Artery

• School: College of The Sequoias
• Department: Biology (BIOL)
• Course: BIOL 030
• Professor: flora

Document Summary

Define the skeletal and ligamentous elements of the shoulder girdle. Define the muscles acting on the shoulder: extrinsic, intrinsic, pectoral, serratus anterior, arm muscles. Know their origins, insertions, innervations and primary actions. Identify the shoulder muscles that comprise the rotator cuff and discuss their function. Identify the boundaries and contents of the quadrangular and triangular spaces. Scapular movements - very flexible, but this causes lack of stability. Upward/downward rotation reference point is glenoid cavity (if it rotates, then it is rotation) Glenohumeral movements joint between arm and scapula. Flexion/extension tends to deviate to middle with flexion (not completely perpendicular to body) Scapula (has superior, medial and lateral border, superior and inferior angle) superior angle is closer to medial border than superior border. Acromion highest point of scapula, comes out posteriorly. Spine of scapula on posterior surface, continuous with acromion. Superior transverse scapular ligament goes across the suprascapular notch to form supracapular foramen. Suprascapular artery goes over the ligament.