Question

____neurons carry messages to the cns and, ____ neurons carry messages away from the cns.

○ motor; sensory

○ afferent; motor

○ motor; efferent

Explanation:

To solve this, we recall neuron types: Afferent (sensory) neurons carry signals to the Central Nervous System (CNS). Motor (efferent) neurons carry signals away from the CNS. Let's analyze options:

• First option: Motor neurons carry away, Sensory (afferent) carry to. So reversed. Incorrect.
• Second option: Afferent (sensory) carry to CNS; Motor (efferent) carry away. Matches.
• Third option: Motor and Efferent are same (carry away), so first blank wrong. Incorrect.

Answer:

B. Afferent; Motor