Which Best Describes How a Neuron Fires

question 30

Multiple Choice

Which 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.