Question

An action potential travels down the axon of a neuron because

• A. Neurotransmitters bind to receptors on the dendrite of the neuron
• B. Neurotransmitters are released from the axon terminals of the neuron
• C. The action potential travels through the synapse from a nearby neuron
• D. Vesicles in the axon terminal release their contents at the synapse
• E. The cell body releases neurotransmitters down the length of the axon

Answer 1

The correct option is A Neurotransmitters bind to receptors on the dendrite of the neuron

• Neurons communicate with each other via electrical events called 'action potentials' and chemical neurotransmitters.
• At the junction between two neurons (synapse), An action potential causes the neuron to release a chemical neurotransmitter.
• As an action potential (nerve impulse) travels down an axon there is a change in polarity across the membrane of the axon. Hence, An action potential travels down the axon of a neuron because Neurotransmitters bind to receptors on the dendrite of the neuron.

So, the correct answer is 'Neurotransmitters bind to receptors on the dendrite of the neuron'.