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IGCSE Biology – Coordination And Response Practice Test

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Which part of a neuron carries impulses away from the cell body?
Correct Answer:
Axon
Explanation:
This question is about the direction in which nerve impulses travel inside a neuron. The part that carries impulses away from the cell body is the axon. Dendrites receive signals and bring them toward the cell body, so they don’t send impulses away. The nucleus sits in the cell body and contains the cell’s genetic material, not the transmission pathway. The myelin sheath insulates the axon and speeds up signal transmission, but it doesn’t determine the direction. When a neuron fires, the impulse starts near the cell body and travels along the axon to reach the synapse with another neuron or an effector cell.

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