Tetanus of a Muscle Is Thought to Be Caused by

question 155

Multiple Choice

Tetanus of a muscle is thought to be caused by

• A)high calcium ion concentrations in the sarcoplasm.
• B)the rapid movement of sodium ions back into the sarcoplasmic reticulum.
• C)an increase in stimulus strength.
• D)increased temperature in the active muscle.
• E)decreased amounts of calcium ions in muscle tissue.

Analyze the effect of R&D expenditures on a firm’s profitability.

Distinguish between the marginal cost and the marginal benefit of R&D spending.

Explain the significance of the interest-rate cost-of-funds curve being perfectly elastic.

Understand the role of diminishing marginal returns in shaping the expected-rate-of-return curve for R&D investments.