Which neuron type carries sensory information toward the brain?

Which neuron type carries sensory information toward the brain?

• A. Motor Neurons
• B. Sensory Neurons
• C. Interneurons
• D. Glial Cells

Answer: (B)

The key idea is the direction of information flow in the nervous system: sensory neurons carry signals from the periphery toward the brain. These afferent neurons detect stimuli such as touch, temperature, and pain and transmit that information into the central nervous system, often via dorsal root ganglia. This setup lets the brain process sensory input and form perceptions. Motor neurons do the opposite—they carry commands from the brain and spinal cord to muscles and glands to produce movement. Interneurons stay inside the CNS and integrate information between sensory inputs and motor outputs. Glial cells support neurons but do not primarily transmit sensory information.

The key idea is the direction of information flow in the nervous system: sensory neurons carry signals from the periphery toward the brain. These afferent neurons detect stimuli such as touch, temperature, and pain and transmit that information into the central nervous system, often via dorsal root ganglia. This setup lets the brain process sensory input and form perceptions. Motor neurons do the opposite—they carry commands from the brain and spinal cord to muscles and glands to produce movement. Interneurons stay inside the CNS and integrate information between sensory inputs and motor outputs. Glial cells support neurons but do not primarily transmit sensory information.