Which of the Following Is True of an Action Potential

question 118

Multiple Choice

Which of the following is true of an action potential?

• A) The sodium channels are opened at a lower voltage than are potassium channels.
• B) An action potential requires 5 msec for completion.
• C) During an action potential, the interior becomes even more negative.
• D) The potassium channels are opened at a lower voltage than are sodium channels.
• E) The overshoot is due to a prolonged change in sodium conductance.

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Definitions:

Break-even Point

The point where a business's total costs and total revenues are the same, leading to neither a profit nor a loss.

Total Revenue Line

A graphical representation in break-even analysis that shows how total revenue changes with varying levels of sales volume.

Contribution Margin

The amount of revenue from sales that exceeds variable costs, contributing to covering fixed costs and generating profit.

Variable Expenses

Costs that change in relation to the business’s activity level or volume, similar to variable costs.