What is the term for each end of a long bone?

The term for each end of a long bone is "epiphysis." In the anatomy of long bones, the epiphyses are the rounded ends that articulate with other bones to form joints. These regions are crucial for the function of long bones, as they contain areas for muscle attachment and are covered with cartilage to facilitate smooth movement at the joints.

The epiphysis also plays an essential role in bone growth, particularly during childhood and adolescence, as it houses growth plates (epiphyseal plates) where the lengthening of bones occurs. This growth is crucial for developing a normal skeletal structure.

Understanding the definition of "epiphysis" helps to establish a clear distinction from other terms related to the bone structure. For instance, the diaphysis refers to the shaft of the long bone, which is primarily composed of compact bone. The metaphysis is the region between the epiphysis and the diaphysis, and it is where the growth plate develops. The term proximal describes the location of a body part closer to the center of the body but does not identify the ends of the long bones specifically. Thus, "epiphysis" is the correct term for each end of a long bone, making it essential to grasp this concept in anatomy