Why Is an Action Potential Propagated Down an Unmyelinated Neuron

question 70

Multiple Choice

Why is an action potential propagated down an unmyelinated neuron plasma membrane?

• A)because the action potential stimulates voltage-gated Cl^- channels adjacent to it
• B)because the action potential stimulates voltage-gated Ca²⁺ channels adjacent to it
• C)because the action potential stimulates voltage-gated Mg⁺ channels adjacent to it
• D)because the action potential stimulates voltage-gated Na⁺ channels adjacent to it

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Definitions:

Infundibulum

The funnel-shaped end part of some organ or structure, such as the pituitary stalk.

Fimbriae

Short, hair-like structures on the surface of some bacteria that help in attachment to other cells and surfaces.

Mesometrium

The part of the broad ligament of the uterus that encloses the uterus, connecting it to the lateral pelvic walls.

Bulbourethral Gland

A pair of small glands situated on either side of the urethra in males that secrete a fluid that lubricates and neutralizes acidity in the urethra.