Kin 325 1st Edition Lecture 10 Outline of Last Lecture I Lower Leg Muscles Anterior Lateral Posterior II Foot Muscles Outline of Current Lecture I Shoulder Girdle Humerus Scapula Clavicle Current Lecture Shoulder Pectoral Girdle Consists of scapula humerus and clavicle The scapula has a costal surface that lies against the ribs subscapular fossa and the posterior surface has a spinous process The humerus sits in the glenoid fossa and is attached to the scapula with several muscles ligaments and tendons The clavicle articulates with the manubrium of the sternum and acromion process of the scapula These notes represent a detailed interpretation of the professor s lecture GradeBuddy is best used as a supplement to your own notes not as a substitute Movements Elevation Depression ABDuction ADDuction External Internal rotation Circumduction Muscles and Tendons of the Rotator Cuf Supraspinatus Infraspinatus Teres minor Subscapularis Bursa Subtendinous bursa of subscapularis medial Subacromial and subdeltoid lateral there are several other smaller bursae that surround the joint Nerves Radial Ulnar Median Axillary Artery Axillary has several branches that reach out in the shoulder Glenohumeral Joint between head of humerus and glenoid cavity of scapula synovial ball and socket joint unstable joint the large head of the humerus connects with the shallow cavity of the cavity very mobile wide range of motion glenoid labrum surrounds the glenoid fossa
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