ANAT 201 Lecture Notes - Lecture 4: Olecranon Fossa, Trochlear Notch, Radial Tuberosity
10 Sep 2016
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Document Summary
Pectoral girdle: aka shoulder girdle, connects upper limbs to axial skeleton, clavicle and scapula, clavicle. S-shaped bone that articulates with manubrium at sternal end and with the acromion process of the scapula. Anterior, articulates with manubrium to form sternoclavicular joint: scapula. Posterior, articulates with clavicle to form acromioclavicular joint and and articulates with the humerus to form the glenohumeral joint. Broad triangular bone with superior, medial, and lateral border. Lateral angle (head of scapula) has the glenoid cavity that articulates with humerus to form the shoulder joint. Scapular spine divides scapula into the supraspinous fossa and the infraspinous fossa. Upper limb: each upper limb has 30 bones. Wrist and hand: carpals (8), metacarpals (5), and phalanges (14) digits, humerus. Great tubercle: rounded projection on lateral surface of head. Lesser tubercle: lies anteriorly, separated from the greater tubercle by the intertubercular groove. Proximal shaft is rounded with deltoid tuberosity along lateral border. Distally, medial and lateral epicondyles project to either side.
