In Skeletal Muscle, an Incomplete Tetanus Would Result from

question 22

Multiple Choice

In skeletal muscle, an incomplete tetanus would result from

• A) action potentials arriving at a rate fast enough for the intracellular Ca²⁺ levels to rise much higher than they would in a muscle twitch.
• B) action potentials arriving at a rate fast enough for sarcomeres to generate force while the elastic components of the muscle are still stretched.
• C) action potentials arriving so quickly that there is no fluctuation in intracellular Ca²⁺ levels.
• D) many, but not all, of the thin filaments being activated to permit cross-bridge formation.

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Definitions:

Output

The quantity of goods or services produced by a business, industry, or country.

Normal Profit

The payment made by a firm to obtain and retain entrepreneurial ability; the minimum income that entrepreneurial ability must receive to induce entrepreneurs to provide their entrepreneurial ability to a firm; the level of accounting profit at which a firm generates an economic profit of zero after paying for entrepreneurial ability.

Implicit Cost

The monetary income a firm sacrifices when it uses a resource it owns rather than supplying the resource in the market; equal to what the resource could have earned in the best-paying alternative employment; includes a normal profit.

Law of Diminishing Returns

The economic principle stating that as one input variable is increased, there is a point at which the marginal gain in output begins to decrease, holding all other inputs constant.