Which region contains sensory interneurons that process somatic and visceral sensory information?

Which region contains sensory interneurons that process somatic and visceral sensory information?

• A. Dorsal horn
• B. Ventral horn
• C. Lateral horn
• D. Dorsal median sulcus

Answer: (A)

Sensory information from the body arrives through the dorsal roots and first synapses in the dorsal horn, where interneurons process and integrate signals. This region handles both somatic senses (like touch and proprioception) and visceral senses (from internal organs), acting as the initial processing and relay station before signals go to higher brain centers or trigger reflexes. The ventral horn contains motor neurons that send commands to muscles, the lateral horn houses autonomic preganglionic neurons in certain segments, and the dorsal median sulcus is just a surface groove, not a processing region. So the dorsal horn is where sensory interneurons that process both somatic and visceral information reside.

Sensory information from the body arrives through the dorsal roots and first synapses in the dorsal horn, where interneurons process and integrate signals. This region handles both somatic senses (like touch and proprioception) and visceral senses (from internal organs), acting as the initial processing and relay station before signals go to higher brain centers or trigger reflexes. The ventral horn contains motor neurons that send commands to muscles, the lateral horn houses autonomic preganglionic neurons in certain segments, and the dorsal median sulcus is just a surface groove, not a processing region. So the dorsal horn is where sensory interneurons that process both somatic and visceral information reside.