Which term describes the tail end of the body?

The term that describes the tail end of the body is "caudal." In anatomical terminology, "caudal" specifically refers to the direction toward the lower part of the body or away from the head. This term is derived from the Latin word "cauda," which means tail, and is used to indicate structures that are situated towards the end of an organism's body.

In contrast, "cranial" pertains to the head or the direction toward the head, indicating an opposite relationship to "caudal." "Ventral" relates to the underside or belly of an organism, while "superior" refers to a position that is higher or above another structure. Therefore, "caudal" is the correct term for identifying the tail end of the body, as it accurately describes the location in relation to the overall body plan.