Which of the Following Statements Concerning Propagation of Action Potentials

question 476

Multiple Choice

Which of the following statements concerning propagation of action potentials is NOT correct?

• A)Saltatory conduction occurs in myelinated nerve fibres.
• B)During conduction by local current flow, there is a flow of current between the active and the adjacent inactive area of the cell membrane, thereby decreasing the potential in the inactive area to threshold.
• C) The action potential jumps from one Schwann cell to the adjacent Schwann cell in a myelinated fibre.
• D) Saltatory conduction is faster than conduction by local current flow.

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Definitions:

Blood Plasma pH

A measure of the acidity or alkalinity of the blood plasma, which is crucial for maintaining homeostasis and proper physiological function.

Acidosis

A condition characterized by an excessive acidity in the body fluids, especially the blood.

Carbonic Acid Levels

The concentration of carbonic acid in a solution, which is important in the buffering of blood pH.

pH Increases

A condition indicating that a solution is becoming less acidic and more alkaline, moving toward a higher pH value.