When an Action Potential Arrives at an Axon Terminal, It

question 21

Multiple Choice

When an action potential arrives at an axon terminal, it causes the opening of _______ channels, which triggers fusion of neurotransmitter vesicles with the cell membrane.

• A) calcium
• B) sodium
• C) potassium
• D) chloride
• E) acetylcholine

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Definitions:

Crystallization

The process through which a solid forms, where the atoms or molecules are highly organized into a structure known as a crystal.

Parenteral Injection

A method of delivering medication by injection into the body tissues, bypassing the digestive tract.

First Step

The initial action taken in a process or sequence of events.

Umbilicus

The medical term for the navel or belly button, which marks the area where the umbilical cord was attached.