Which of the Following Statements Regarding Neurons and the Action

question 25

Multiple Choice

Which of the following statements regarding neurons and the action potential is NOT true?

• A) efflux of K⁺ ions leads to a brief hyperpolarization of the cell membrane
• B) the resting membrane potential is approximately −80mV
• C) sodium ions that enter an axon through sodium channels in a given axonal region diffuse further along the axon, depolarizing the next axonal region
• D) in myelinated axons, sodium channels are distributed evenly
• E) all of the above are true

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Definitions:

Terminal Bronchiole

The smallest airways in the lungs, located at the end of the bronchiole tree, not directly involved in gas exchange.

Secondary Bronchus

Branches of the primary bronchi that lead into each lobe of the lungs, further branching into the tertiary bronchi.

Copper Pipe

Tubing made from copper, commonly used in plumbing for its durability and resistance to corrosion.

Stiff

Describes an object or body part that is rigid, difficult to bend or move.