Which of the Following Best Describes the Effect of Sympathetic

question 15

Multiple Choice

Which of the following best describes the effect of sympathetic activity on ventricular contractile cells?

• A)The rates of contraction and relaxation both decrease, whereas the force of contraction increases.
• B)The force of contraction increases, whereas the rates of contraction and relaxation are not affected.
• C)The rates of contraction and relaxation and the force of contraction all increase.
• D)The rate of contraction and the force of contraction both increase, whereas the rate of relaxation decreases.
• E)The rates of contraction and relaxation both increase, whereas the force of contraction decreases.

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