ANAT 215 Lecture Notes - Lecture 27: Bicipital Groove, Levator Scapulae Muscle, Serratus Anterior Muscle

• School: Queen's University
• Department: Anatomy and Cell Biology
• Course: ANAT 215
• Professor: Leslie W Mac Kenzie

Document Summary

Upper limb muscles (reading materials: chapter 11: pages 291-305, 324-327; chapter 22: pages 582-583, 595- Note: to understand the primary function of a muscle you need to understand where the muscle is coming from (origin) and where it is going to (insertion). Muscles that attach the pectoral girdle to the axial skeleton (these muscles also move the scapula): Consist of anterior (2) and posterior (3) extrinsic shoulder muscles: pectoralis minor serratus anterior trapezius anterior: Function pull scapula down and forwards onto the rib cage. Extend laterally and backwards to get to back of ribcage. Insertion medial border of the anterior surface of the scapula. Function protract the shoulders (pull scapulae towards rib cage) posterior: Origin occipital bone and all the way down spine to t12 vertebrae. Insertion upper muscle clavicle and acromion (top part of shoulder) Deep to the trapezius (must remove trapezius to see. Insert- medial border of scapula below the spine.