Identify the Correct Sequence of Steps in the Generation of an Action

question 111

Multiple Choice

Identify the correct sequence of steps in the generation of an action potential. 1. Activation of sodium channels and rapid depolarization
2) Inactivation of sodium channels and activation of potassium channels
3) Depolarization to threshold
4) Closing of potassium channels

• A) 1, 3, 4, 2
• B) 3, 1, 2, 4
• C) 4, 3, 2, 1
• D) 1, 3, 2, 4
• E) 3, 1, 4, 2

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Definitions:

Unconditioned Stimulus

In classical conditioning, a stimulus that naturally and automatically triggers an unconditioned response without any prior learning.

Conditioned Stimulus

A stimulus that was once neutral but, after being paired with the unconditioned stimulus, gradually induces a conditioned response.

Aplysia

A genus of sea slugs that are often used in neurological research due to their simple, large nerve cells.

Squirt

To eject liquid in a thin, fast stream through a narrow opening.