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Costal cartilage 1
Other Terms: Costal cartilage of rib, Cartilago costalis, Cartilage costal
The first costal cartilage is the shortest and widest of the first seven cartilages that attach to the sternum. The cartilage descends slightly from the end of the first rib to form a synchondrosis with the sternum. The sternoclavicular articular disc, the costoclavicular ligament, the pectoralis major muscle, the sternothyroid muscle, and the subclavius muscle attach to the first costal cartilage.