The head of the humerus is laterally and medially convex. The medial convexity fits into the glenoid fossa, and the lateral convexity, the lesser tuberosity, provides a site for muscle attachment.
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The humerus articulates with the scapula at the glenoid fossa to form the shoulder joint. Specifically, the head of the humerus sits in the shallow, concave glenoid cavity of the scapula. This ball-and-socket joint allows for a wide range of motion in the shoulder.
The acromion, which protrude from the scapula, is the body structure directly superior to the head of the humerus.
The occipital condyles of the skull, which are located at the base of the occipital bone, are concave and articulate with the superior articular facets of the atlas (C1 vertebra) at the atlanto-occipital joint. This concave-convex articulation allows for flexion and extension movements of the head.
the head of the humerus
Convex usually, its used as a light source and not as a magnifier (or imager of any sort).
It inserts onto the humerus. It originates from the coracoid process of the scapula. There are 2 parts - Long head and short head. The long head is connected to the coracoid process by a tendon that comes up between the tubercules of the humerous. The short head is connected directly to the humerus.
The glenoid cavity of the scapula articulates with the head of the humerus, forming the glenohumeral joint, also known as the shoulder joint. This articulation allows for the wide range of motion seen in the shoulder joint.
Capitulum articulates with the head of radius
Actually, the anatomic neck of the humerus is proximal to the surgical neck of the humerus. The anatomic neck is the slightly constricted region below the head of the humerus, while the surgical neck is the region of the humerus prone to fractures located distal to the tubercles.
You can determine the side of the body a humerus bone belongs to by looking at certain features such as the location of the head and the orientation of the trochlea and capitulum. The head of the humerus should be facing medially and the trochlea should face posteriorly to help identify the left or right side.
Rotator cuff