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

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

• A. Afferent (sensory) neurons
• B. Efferent (motor) neurons
• C. Interneurons
• D. Multipolar neurons

Answer: (A)

Afferent (sensory) neurons are the ones that carry information from sensory receptors toward the spinal cord or brain. They start at receptors in the body (like skin, eyes, or muscles) and transmit signals along their axons into the CNS for processing. Efferent (motor) neurons do the opposite, sending commands from the CNS to muscles or glands. Interneurons live inside the CNS and relay and process information between sensory input and motor output. Multipolar describes a common neuron shape that can be found in various roles, but it doesn’t specify the direction of information flow. So the best fit for carrying information from receptors to the CNS is the afferent (sensory) neurons.

Afferent (sensory) neurons are the ones that carry information from sensory receptors toward the spinal cord or brain. They start at receptors in the body (like skin, eyes, or muscles) and transmit signals along their axons into the CNS for processing. Efferent (motor) neurons do the opposite, sending commands from the CNS to muscles or glands. Interneurons live inside the CNS and relay and process information between sensory input and motor output. Multipolar describes a common neuron shape that can be found in various roles, but it doesn’t specify the direction of information flow. So the best fit for carrying information from receptors to the CNS is the afferent (sensory) neurons.