If a Stimulus Is Strong Enough to Reach a Threshold

question 52

Multiple Choice

If a stimulus is strong enough to reach a threshold level,

• A) an action potential is shut down.
• B) an action potential occurs.
• C) sodium channels in the myelin open.
• D) the resting potential is restored.

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Definitions:

Social Security

A government program that provides financial assistance to people with insufficient or no income, especially the elderly, disabled, and unemployed.

Medicare Taxes

Federal taxes that fund Medicare, deducted from employees' paychecks and matched by employers.

Effective Federal Tax Rate

The average rate at which an individual or a corporation is taxed by the federal government, calculated by dividing the total tax paid by taxable income.

Tax-Deferred Retirement

Investment accounts, like 401(k)s or IRAs, that allow earnings to grow tax-free until funds are withdrawn, usually during retirement.