What Ensures the One-Way Direction of an Action Potential

question 58

Multiple Choice

What ensures the one-way direction of an action potential?

• A) As soon as the action potential has passed by, that portion of the axon undergoes a short refractory period.
• B) Action potentials are self-propagating.
• C) Conduction of an action potential is an all-or-none event.
• D) An action potential at one node causes an action potential at the next node.
• E) An axon can conduct a volley of action potentials very quickly.

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Definitions:

Melanoma

A type of skin cancer that develops from the pigment-producing cells known as melanocytes, which can become aggressive if not treated early.

Basal Cell Carcinoma

A type of skin cancer that begins in the basal cells and is often caused by exposure to ultraviolet (UV) light.

Squamous Cell Carcinoma

a type of cancer that begins in the squamous cells, which are flat cells found in the skin and other organs.

Eczema

A medical condition characterized by patches of skin that become inflamed, itchy, red, cracked, and rough.