scapula bone -Anatomy
hello, INTRODUCTION- It is a thin and flat bone on the posterolateral aspect to the thoracic cage.is the bone that connects the humerus (upper arm bone) with the clavicle (collar bone). Like their connected bones the scapulae are paired, with the scapula on the left side of the body being roughly a mirror image of the right scapula. In early Roman times, people thought the bone resembled a trowel, a small shovel. General features- SURFACES:- 1. The costal surface or subscapular fossa is concave and is directed medially. It is marked by 3 longitudinal ridges. At the upper part of the fossa is a transverse depression, where the bone appears to be bent on itself along a line at right angles to and passing through the center of the glenoid cavity, forming a considerable angle, called the subscapular angle; this gives greater strength to the body of the bone by its arched form, while the summit of the arch serves to support the spine and acromion. The costal surface sup...
