Suppose That After an Action Potential We Clam P the Membrane

question 7

Multiple Choice

Suppose that after an action potential we clam p the membrane potential at -50 mV and don’t let it completely repolarize. We find that we cannot elicit an action potential. This is called a depolarization block. What causes it?

• A) Persistently elevated g_K
• B) The inactivation gates do not re-open
• C) The activation gates of the Na channel are closed
• D) Persistently elevated g_Na
• E) The inactivation gates are stuck open

---

Definitions:

Balance Sheet

A financial outline that displays a company's assets, financial obligations, and the ownership interest of shareholders at a determined date.

Net Income

The total profit of a company after subtracting all expenses, taxes, and costs from total revenue.

Financing Activities

Activities that result in changes in the size and composition of the equity capital and borrowings of an entity, including issuing debt, equity, and paying dividends.

Cash Flows

The sum of funds entering and exiting a company, particularly influencing its liquid assets.