The Magnitude of Depolarization at the Peak of an Action

question 110

Multiple Choice

The magnitude of depolarization at the peak of an action potential is dependent on what factor?

• A)the size of the graded potential
• B)the size of the stimulus
• C)the strength of the electrochemical gradient for sodium and potassium ions relative to their permeability to these ions
• D)the length of the refractory period
• E)the concentration of sodium and potassium ions

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Definitions:

Micturition

The process of urination or voiding the bladder, controlled by the coordination of the central, autonomic, and somatic nervous systems.

Internal Sphincter

A circular muscle that helps control the expulsion of contents within an organ system, often found in the digestive and urinary systems.

Higher Brain Centers

Regions of the brain responsible for complex functions such as decision making, reasoning, processing emotions, and controlling sophisticated behaviors.

Filtration Membrane

A semipermeable barrier that separates particles in a fluid, commonly found in the kidneys for waste removal from the blood.