Which of the Following Describes the Role of Acetylcholine in Muscle

question 69

Multiple Choice

Which of the following describes the role of acetylcholine in muscle contraction?

• A)Acetylcholine binds to the membrane receptor in the sarcolemma and facilitates opening of the sodium channels.
• B)Acetylcholine binds to the sarcolemma to open calcium channels.
• C)Acetylcholine binds to the membrane receptor and inhibits the stimulation and contraction of muscle fiber.
• D)Binding of acetylcholine results in the repolarization of the sarcolemma.

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Definitions:

Income Effect

Variations in the income levels of individuals or economies and the resultant effects on the demand for goods or services.

Substitution Effect

The economic understanding that as prices rise or incomes decrease consumers will replace more expensive items with less costly alternatives.

Hourly Wages

The amount of earnings paid to an employee for each hour worked.

Fringe Benefits

Additional benefits, beyond a salary, offered to employees, such as health insurance, retirement plans, and paid time off.