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What is Which of the following is the only shoulder girdle muscle which is not inseed on the bone in free upper limb? and explain in detail?
Pectoralis minor is the only shoulder girdle muscle which is not inseed on the bone in free upper limb. It arises from the 3rd to 5th ribs and is inseed on the coracoid process. It lowers and rotates the scapula. It is innervated by pectoral nerves (C6-8). Coracobrachialis: It arise from the coracoid process together with the sho head of the biceps brachii. It is inseed on the medial surface of the humerus on the continuation of the crest of the lesser tubercle. It is innervated by musculocutaneous nerve. Pectoralis major: The three pas of the muscle get inseed on the crest of the greater tubercle of humerus. It forms the muscular basis of the anterior axillary fold.