BIOL301 Study Guide - Proximal Radioulnar Articulation, Suprascapular Notch, Spine Of Scapula

• School: University of Waterloo
• Department: Biology
• Course: BIOL301
• Professor: Vivian Dayeh

Document Summary

Anteriorly consists of clavicle: medial end of each clavicle joins to the sternum and first rib, lateral ends of clavicle joins to scapulae at the shoulder. Provides attachment for many muscles that move the limb. S-shaped bones: sternal end attaches to manubrium medially, flattened acromial end articulates with scapula laterally. Functions: provides attachment for muscles, act as braces: hold the scapulae and arms out laterally from the thorax, transmit compression forces from the upper limbs to axial skeleton. Thin, triangular flat bones located on the dorsal surface of the rib cage between rib 2 superiorly and rib 7 inferiorly. Each scapula has 3 borders: superior border shortest and sharpest, medial/vertebral border parallel"s the vertebral column, lateral/axillary border abuts the axilla (armpit) and ends superiorly in a shallow fossa (the glenoid cavity) This cavity articulates with humerus forming the shoulder joint.