When Sodium Ions Flow into a Neuron and Depolarize It

question 29

Multiple Choice

When sodium ions flow into a neuron and depolarize it, they create ________.

• A) an action potential
• B) breakdown of the cell nucleus
• C) a relative refractory period
• D) internal combustion

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Definitions:

Long Axis

The longest dimension or principal axis of a body or geometric figure, representing the greatest distance between two points along any chosen orientation.

Central Canal

The cerebrospinal fluid-filled channel running longitudinally through the length of the entire spinal cord.

Cheekbones

The bones that form the structure of the cheeks, also known as the zygomatic bones.

Fingers

The digits of the hand, crucial for various functions including grasping, feeling, and manipulating objects.