what structure is located in the upper third of the sternocleidomastoid muscle
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.
Stomach In classical anatomy, the human stomach is divided into four sections, beginning at the gastric cardia,[6] each of which has different cells and functions.
Mediastinum Anatomists, surgeons, and clinical radiologists compartmentalize the mediastinum differently. For instance, in the radiological scheme of Felson, there are only three compartments (anterior, middle, and posterior), and the heart is part of the anterior mediastinum.[6][pageÂ needed]
Capitulum of the humerus It articulates with the cupshaped depression on the head of the radius, and is limited to the front and lower part of the bone.