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The clavicle, collarbone, or keybone is a slender, S-shaped long bone approximately 6 inches (15 cm) long [1] that serves as a strut between the shoulder blade and the sternum (breastbone). There are two clavicles, one on each side of the body.
The shoulder girdle or pectoral girdle is the set of bones in the appendicular skeleton which connects to the arm on each side. In humans, it consists of the clavicle and scapula; in those species with three bones in the shoulder, it consists of the clavicle, scapula, and coracoid.
On the medial part of the clavicle is a broad rough surface, the costal tuberosity (rhomboid impression), rather more than 2 cm. in length, for the attachment of the costoclavicular ligament. The rest of this surface is occupied by a groove , which gives attachment to the Subclavius ; the coracoclavicular fascia , which splits to enclose the ...
The clavicle represents the first remains of the extinct species Australopithecus sediba, found in South Africa and believed to be an early Homo relative. The thumb bone was found at Rising Star ...
Insertion into coracoid process instead of clavicle or into both clavicle and coracoid process. Sternoscapular fasciculus to the upper border of scapula. Sternoclavicularis [3] from manubrium to clavicle between pectoralis major and coracoclavicular fascia. [1] Rarely, the subclavius may be missing entirely. [4]
Shoulder joint. Posterior view at left. Anterior view at right. 1. Clavicle, 2. Scapula (with 3. Scapular spine, 4. Coracoid process, 5. Acromion), 6. Humerus; Joints ...
The sternoclavicular joint or sternoclavicular articulation is a synovial saddle joint between the manubrium of the sternum, and the clavicle, and the first costal cartilage. The joint possesses a joint capsule, and an articular disc, and is reinforced by multiple ligaments. [1]
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