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

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

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

Answer: (B)

Sensory (afferent) neurons carry information from receptors to the spinal cord and brain. These neurons begin in sensory receptors—like those in the skin, muscles, or organs—and transmit electrical signals toward the central nervous system. In the peripheral nervous system, many sensory neurons have their cell bodies in the dorsal root ganglia, with a peripheral branch to the receptor and a central branch that enters the spinal cord or brain, enabling perception and awareness of stimuli such as touch, temperature, pain, or body position. This role is distinct from motor neurons, which send commands from the CNS to muscles; interneurons, which link neurons within the CNS to process and relay information; and glial cells, which support and insulate neurons but do not transmit sensory information themselves.

Sensory (afferent) neurons carry information from receptors to the spinal cord and brain. These neurons begin in sensory receptors—like those in the skin, muscles, or organs—and transmit electrical signals toward the central nervous system. In the peripheral nervous system, many sensory neurons have their cell bodies in the dorsal root ganglia, with a peripheral branch to the receptor and a central branch that enters the spinal cord or brain, enabling perception and awareness of stimuli such as touch, temperature, pain, or body position.

This role is distinct from motor neurons, which send commands from the CNS to muscles; interneurons, which link neurons within the CNS to process and relay information; and glial cells, which support and insulate neurons but do not transmit sensory information themselves.