where is your sternum located on your body
Sternum The sternum or breastbone is a long flat bone shaped like a necktie located in the center of the chest. It connects to the ribs via cartilage, forming the front of the rib cage, and thus helps to protect the heart, lungs, and major blood vessels from injury. The sternum consists of three regions: the manubrium, the body, and the xiphoid process.[1] It is one of the largest and longest flat bones of the body. The word sternum originates from the Greek στέρνον, meaning chest.
Sternocleidomastoid muscle The clavicular head is composed of fleshy and aponeurotic fibers, arises from the upper, frontal surface of the medial third of the clavicle; it is directed almost vertically upward.