What is the term for a spherical projection found at the ends of limb bones?

The term for a spherical projection found at the ends of limb bones is "head." In the context of anatomy, the head refers to the rounded, often ball-like portion of a bone that fits into a socket of another bone, allowing for joint movement. For example, at the shoulder joint, the head of the humerus articulates with the glenoid cavity of the scapula, creating a ball-and-socket joint that permits a wide range of motion. This structure is crucial for mobility and stability in various joints of the body.

Understanding this terminology is fundamental when studying veterinary anatomy, as it assists in identifying specific structures relevant to animal health and surgical procedures. The other terms mentioned—neck, tuberosity, and trochanter—describe different anatomical features. The neck usually refers to a narrow region next to the head, a tuberosity is a raised area for muscle attachment, and a trochanter is a specific type of tuberosity found on the femur, primarily associated with muscle attachment points as well.