In anatomical terminology, the term "ventral" refers to the front or belly side of the body. The direction opposite to ventral is "dorsal," which refers to the back side of the body. Understanding these terms is crucial for accurately describing locations and directions in anatomical studies.

- Ventral: Front or belly side of the body
- Dorsal: Back side of the body (opposite to ventral)
- Medial: Toward the midline of the body
- Lateral: Away from the midline of the body
- Proximal: Closer to the point of attachment or origin

Therefore, the correct answer is Dorsal, as it describes the direction opposite to ventral.

Reference: Gray's Anatomy, 41st Edition, Volume 1, Chapter 1 / Page 5