A Motor Unit

question 46

Multiple Choice

A motor unit

• A) is usually composed of different muscle fiber types.
• B) is comprised of a single motor neuron and all the muscle fibers it innervates.
• C) can determine whether to contract one of its associated fibers or all of them depending on the load.
• D) consists of a fascicle, a myofiber, and its myofibrils.
• E) is comprised of a motor neuron and the fascicle it innervates.

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Definitions:

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A measure of a company's profitability calculated by dividing net income by the number of outstanding shares of its common stock.

Net Income

The total profit of a company after all expenses, including taxes and operating expenses, have been deducted from total revenue.

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Dividends that are paid out to preferred shareholders before any dividends are distributed to common shareholders, often at a fixed rate.

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