When the Charge Inside of a Neuron Shifts from -70

question 66

Multiple Choice

When the charge inside of a neuron shifts from -70 millivolts to +40 millivolts, it is called:

• A) an ion channel.
• B) polarization.
• C) a resting potential.
• D) depolarization.

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Definitions:

Shutdown Point

The level of operation at which a company does not benefit from continuing operations and may decide to temporary halt production—it's where marginal cost equals average variable cost.

Lowest Price

The minimum amount at which a product or service is sold, often determined by costs, competition, and market demand.

Long Run

A period in which all factors of production and costs are variable, allowing full adjustment to changes.

Firm's Profit

The financial gain achieved by a firm when its total revenues exceed its total expenses.