The dorsal median sulcus is located on which surface of the spinal cord?

The dorsal median sulcus is located on which surface of the spinal cord?

• A. Ventral surface
• B. Dorsal surface
• C. Lateral surface
• D. Central canal region

Answer: (B)

The dorsal median sulcus is a shallow groove that runs along the midline on the back (posterior) surface of the spinal cord. It marks the posterior midline and helps separate the dorsal columns. In contrast, the front surface has the ventral median fissure, and the central canal lies inside the cord rather than on a surface. So the location is the dorsal (posterior) surface.

The dorsal median sulcus is a shallow groove that runs along the midline on the back (posterior) surface of the spinal cord. It marks the posterior midline and helps separate the dorsal columns. In contrast, the front surface has the ventral median fissure, and the central canal lies inside the cord rather than on a surface. So the location is the dorsal (posterior) surface.