Which of the Following Best Describes the Effect of Sympathetic

question 91

Multiple Choice

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

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