The Poison Tetraethylammonium (TEA) Interferes with Normal Neural Communication

question 40

Multiple Choice

The poison tetraethylammonium (TEA) interferes with normal neural communication. The toxin binds to and blocks voltage-gated potassium channels in the neuron cell membrane. Which of the following best describes the effects of TEA on the action potential?

• A)The depolarization phase of the action potential fails to occur.
• B)The repolarization phase of the action potential is blocked.
• C)The refractory period of the action potential is shortened.
• D)The action potential fails to be regenerated at the nodes of Ranvier.

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Definitions:

Compounded Quarterly

Compounded quarterly refers to the process of calculating interest on an investment or loan by adding the interest to the principal amount every quarter, allowing the interest to earn interest in subsequent periods.

Quarterly Payments

Quarterly payments are payments made four times a year at regular intervals, often used in the context of dividends, taxes, or loan repayments.

Interest Rate

This refers to the cost of borrowing money or the return earned on an investment, generally expressed as a yearly percentage.

Home Mortgage Loan

A loan used to purchase a residential property, secured by the home itself.