Which neurons carry information from sensory receptors to the brain and spinal cord?

Which neurons carry information from sensory receptors to the brain and spinal cord?

• A. Glial cells
• B. Interneurons
• C. Motor neurons
• D. Sensory neurons (afferent)

Answer: (D)

Information from sensory receptors to the brain and spinal cord is carried by sensory neurons, also called afferent neurons. These cells detect stimuli from the outside or inside the body (like touch, heat, light, or sound) and convert it into nerve impulses that travel toward the CNS. Inside the spinal cord and brain, the signal may be processed and relayed by interneurons, but the initial transmission from receptor to CNS is performed by sensory neurons. Glial cells provide support and nourishment, not primary signal transmission; motor neurons carry signals from the CNS to muscles or glands. So the best answer is sensory neurons.

Information from sensory receptors to the brain and spinal cord is carried by sensory neurons, also called afferent neurons. These cells detect stimuli from the outside or inside the body (like touch, heat, light, or sound) and convert it into nerve impulses that travel toward the CNS. Inside the spinal cord and brain, the signal may be processed and relayed by interneurons, but the initial transmission from receptor to CNS is performed by sensory neurons. Glial cells provide support and nourishment, not primary signal transmission; motor neurons carry signals from the CNS to muscles or glands. So the best answer is sensory neurons.