What term describes body parts that are farther from the body surface?

The term that describes body parts that are farther from the body surface is "deep." In anatomical terminology, "deep" refers to structures that are located further away from the outer surface of the body. For example, muscles located beneath the skin are considered deep compared to the skin itself.

Understanding this concept is crucial, as it helps in accurately describing the positions and relationships of various structures within the body. The other terms—superficial, medial, and lateral—contextually refer to other spatial relationships: "superficial" means closer to the surface, "medial" indicates a position toward the midline of the body, and "lateral" refers to structures that are farther from the midline. Knowing these distinctions aids in clear communication about anatomy and is essential for anatomical studies and clinical contexts.