In the Process of Saltatory Action Potential Propagation

question 49

Multiple Choice

In the process of saltatory action potential propagation,

• A) the action potential is triggered by graded depolarization of the initial segment.
• B) at threshold, sodium channels begin to open rapidly.
• C) local currents depolarize the region just adjacent to the active zone.
• D) local currents depolarize a sensitive spot distant from the active zone.
• E) A, B, and D

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Definitions:

Maintenance-Margin

The minimum amount of equity that must be maintained in a margin account to continue holding positions, preventing a margin call.

Margin Call

A demand by a broker that an investor deposits further cash or securities to cover possible losses.

Margin Deposit

A margin deposit is an initial sum deposited to cover potential losses when borrowing capital for investing, typically in a margin account for trading securities.

Open Interest

The number of futures contracts outstanding.