Which part receives signals from other neurons?

Which part receives signals from other neurons?

• A. Dendrites
• B. Axon terminal
• C. Myelin sheath
• D. Node of Ranvier

Answer: (A)

Signals from other neurons are received by dendrites. These tree-like extensions are packed with receptors that detect neurotransmitters released into the synaptic cleft. When a neurotransmitter binds, ion channels open and small postsynaptic potentials are generated, changing the membrane potential of the dendrite. These signals are then transmitted to the cell body for integration, and if the combined input reaches threshold, an action potential is fired along the axon. The axon terminal is where signals are sent to the next neuron, while the myelin sheath and the Node of Ranvier relate to conduction speed, not initial reception of signals. So the dendrites are the primary sites that receive signals from other neurons.

Signals from other neurons are received by dendrites. These tree-like extensions are packed with receptors that detect neurotransmitters released into the synaptic cleft. When a neurotransmitter binds, ion channels open and small postsynaptic potentials are generated, changing the membrane potential of the dendrite. These signals are then transmitted to the cell body for integration, and if the combined input reaches threshold, an action potential is fired along the axon. The axon terminal is where signals are sent to the next neuron, while the myelin sheath and the Node of Ranvier relate to conduction speed, not initial reception of signals. So the dendrites are the primary sites that receive signals from other neurons.