Explanation

Each half pectoral girdle consists of suprascapula, scapula, coracoids, precoracoid, epicoracoid and paraglenoid cartilage, Clavicle is a slender rod, separated from the coracoids by a wide gap called coracoids foramen. Posteriorly scapula forms the upper half of a deep cup-like depression the glenoid cavity for articulation with the humerus bone of forelims.