A Nerve Has a Resting M Embrane Potential of -70

question 19

Multiple Choice

A nerve has a resting m embrane potential of -70 m V. E_Cl = -80 mV; E_K = -95 mV and E_Na = +65 mV. Increasing g_Cl should produce

• A) An inward current and an EPSP
• B) An outward current and an EPSP
• C) An inward current and an IPSP
• D) An outward current and an IPSP
• E) It is impossible to tell from the information given

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Definitions:

Financial Break-even

The point at which total revenue equals total costs and expenses, resulting in no net loss or gain.

Variable Costs

Expenses that vary directly with the volume of production or the degree of activity within a company.

Fixed Costs

Costs that do not vary with the volume of production or level of activity within a certain range. These are expenses that must be paid regardless of business activity, such as rent or salaries.

Required Return

The minimum expected yield by investors as compensation for the level of risk associated with an investment.