Which of the Following Statements Concerning Propagation of Action Potentials

question 119

Multiple Choice

Which of the following statements concerning propagation of action potentials is incorrect?

• A) saltatory conduction occurs in myelinated nerve fibers.
• B) during conduction by local current flow, there is a flow of current between the active and 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 fiber.
• D) saltatory conduction is faster than conduction by local current flow.
• E) conduction by local current flow is the method of propagation in unmyelinated fibers.

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Definitions:

Preauthorization

Authorization or approval for payment from a third-party payer requested in advance of a specific procedure.

Third-party Payer

An entity (usually an insurance company or government agency) that pays medical expenses on behalf of the patient.

Elective Procedure

A medical procedure that is not required to sustain life but is requested for payment to the third-party payer by the patient or physician. Some elective procedures are paid for by third-party payers, whereas others are not.

Predetermination

The act of deciding or establishing something in advance or having a predetermined outcome.