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Afferent nerve fibres carry impulses from

1. effector organs to CNS
2. receptors to CNS
3. CNS to receptors
4. CNS to muscles

Correct answer: receptors to CNS

Solution

Afferent nerve fibres are sensory fibres, so they carry impulses from receptors toward the CNS. Efferent fibres do the opposite, carrying commands from the CNS to effectors like muscles and glands.

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