Written by the Fiveable Content Team • Last updated September 2025
Written by the Fiveable Content Team • Last updated September 2025
Definition
The head of the humerus is the rounded, proximal end of the humerus bone that fits into the glenoid cavity of the scapula, forming part of the shoulder joint. It facilitates arm rotation and movement by articulating with the shoulder girdle.
Related terms
Glenoid Cavity: The shallow depression in the scapula that articulates with the head of the humerus to form part of the shoulder joint.
Rotator Cuff: A group of muscles and tendons that surround and stabilize the shoulder joint, ensuring smooth movement and rotation of the arm.
The connection between bones at a joint where movement occurs; for example, where the head of the humerus articulates with the glenoid cavity to allow shoulder movement