Which anatomical term describes a position toward the back part of the body?

The anatomical term that describes a position toward the back part of the body is "posterior." This term is used in anatomical language to indicate a location that is located towards the backside of a body or an organ. For example, in human anatomy, the shoulder blades are posterior to the ribcage, meaning they are located towards the back when considering the body's orientation.

In contrast, "ventral" refers to the front or belly side of the body, while "anterior" is synonymous with ventral, indicating the front aspect as well. The term "medial" pertains to a position closer to the midline of the body, which does not relate to the back or front orientation.

Thus, the emphasis on the anatomical positioning provided by the term "posterior" clearly differentiates it from these other terms, establishing it as the correct answer for describing a back position.