What Keeps an Action Potential Continuing Down an Axon

question 175

Multiple Choice

What keeps an action potential continuing down an axon?

• A)At each successive segment of the axon, the action potential is regenerated by depolarization and the movement of ions across the axon's membrane.
• B)Neurotransmitters are constantly being released to generate the action potential at each successive segment of the
• C)axon Ac.tion p Incootrrecenttials are conducted down the axon just as electricity is conducted through a wire.
• D)Ion channels open and close at the nodes of Ranvier, allowing neurotransmitters to enter into the axon and regenerate an action potential at each node.

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Definitions:

Aortic Semilunar Valve

One of the two semilunar valves of the heart, located between the left ventricle and the aorta, preventing backflow of blood.

Great Vessels

The major arteries and veins that directly enter and exit the heart, responsible for systemic and pulmonary circulation.

Apex

The top or highest part of something, often used to describe the pointed end of the heart.

Circumflex Artery

An artery that branches off from the coronary arteries to supply the heart muscle with oxygenated blood.