What term describes a region between one joint and another in human anatomy?

The term "segment" refers to a specific region in the context of human anatomy that lies between two joints. This is especially relevant when discussing the limbs, where each limb can be divided into segments—such as the upper arm (humerus) and forearm (radius and ulna)—that are strategically situated between adjacent joints (the shoulder joint and the elbow joint).

In anatomical terms, segments can often help in locating structures, understanding function, and studying movement patterns within that specific region. This terminology is essential for a clear understanding of anatomy as it allows health professionals and students to communicate more effectively about specific areas of the body during assessment and intervention.

The other terms provided do not accurately describe the region between joints. While "joint" denotes the articulation point itself, "cavity" generally refers to an enclosed space within the body, and "articulation" is a term used to describe the connection between bones at a joint rather than the space between them. Hence, "segment" is the most appropriate term for indicating the area bridging two joints.