Which type of nerve fiber carries impulses toward the spinal cord and brain?

Which type of nerve fiber carries impulses toward the spinal cord and brain?

• A. Interneuron/Connecting
• B. Motor
• C. Sensory
• D. Peripheral Nerves

Answer: (C)

The idea being tested is the direction of nerve impulses relative to the central nervous system. Sensory fibers—also called afferent fibers—carry information from sensory receptors in the body toward the spinal cord and brain. They relay signals such as touch, temperature, pain, and other sensory inputs to the CNS for processing and response. In contrast, motor fibers carry commands from the CNS out to muscles and glands, directing movement and activity. Interneurons operate mainly within the CNS to connect other neurons, and peripheral nerves are bundles that include many sensory and motor fibers together, not a single direction. So the fibers that move impulses toward the spinal cord and brain are the sensory (afferent) fibers.

The idea being tested is the direction of nerve impulses relative to the central nervous system. Sensory fibers—also called afferent fibers—carry information from sensory receptors in the body toward the spinal cord and brain. They relay signals such as touch, temperature, pain, and other sensory inputs to the CNS for processing and response. In contrast, motor fibers carry commands from the CNS out to muscles and glands, directing movement and activity. Interneurons operate mainly within the CNS to connect other neurons, and peripheral nerves are bundles that include many sensory and motor fibers together, not a single direction. So the fibers that move impulses toward the spinal cord and brain are the sensory (afferent) fibers.