In a Neuron,what Happens When an Action Potential Reaches the Axon

question 63

Multiple Choice

In a neuron,what happens when an action potential reaches the axon terminals of the neuron?

• A)Since neurons touch one another,the action potential simply travels to an adjoining neuron.
• B)The action potential stimulates the release of chemical substances.
• C)The impulse changes direction,heading back to the cell body.
• D)An electrical spark forms,which may jump to other neurons.

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Definitions:

Melanin

A pigment produced by melanocytes in the skin, hair, and eyes, responsible for coloration and protection against ultraviolet light.

Itch Mite

A small parasite that causes severe itching by burrowing into the skin, leading to conditions such as scabies.

Contagious

Can be spread from one individual to another through either direct or indirect means of contact.

Pigment

Substances that give color to materials and biological tissues, used in painting, manufacturing, and various biological functions.