What Best Describes How a Neuron Fires

question 12

Multiple Choice

What best describes how a neuron fires?

• A) Na⁺ ions cross the plasma membrane initiating a wave that travels down the axon.
• B) Vesicles carry neurotransmitters from the nucleus to the other end of the neuron.
• C) Na⁺ ions enter one end of the neuron and diffuse to the other end down the axon.
• D) Neurotransmitters enter one end of the neuron and diffuse to the other end down the axon.
• E) Neurotransmitters cross the plasma membrane creating a wave that travels down the axon.

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