This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pharmacology
The cell body of all sensory neurons is located within the 
Select and explain. 
A. Dorsal gray horn, B. Dorsal root ganglion, C. Spinal cord, D. Brain
B: Dorsal root ganglion
Answer: B: Dorsal root ganglion 
Explanation: B: The cell bodies of the sensory neurons leading to the spinal cord are located in clusters, the dorsal root ganglia (DRG), next to the spinal cord.
A: Dorsal gray horn is a mass of gray matter found in every segment of the spinal cord and is responsible for the processing system of sensory signals that travel within the spinal cord,
C: The spinal cord is a long, thin, tubular bundle of nervous tissue and support cells that extends from the foramen magnum at the base of the skull to the second lumbar vertebrae.
D: Brain serves as a command center for the human nervous system. It receives input from the sensory organs and sends output to the muscles.