IGCSE Biology – Coordination and Response Practice Test

Dendrites are the receiving extensions of a neuron. They pick up signals from other neurons and convey them toward the cell body, allowing the neuron to sum multiple inputs. If the overall signal is strong enough, an impulse is generated and travels along the axon away from the cell body to the next neuron or muscle. The nucleus sits inside the cell body to control activities, and the synapse is the junction where communication occurs between neurons. So, the part that carries impulses toward the cell body is the dendrite.