What Is the Effect of the Release of Norepinephrine by the Sympathetic

question 5

Multiple Choice

What is the effect of the release of norepinephrine by the sympathetic nervous system?

• A) Smooth muscle and cardiac muscle relax.
• B) Smooth muscle and cardiac muscle are activated and increase the force of their muscle contractions.
• C) Smooth muscle relaxes, while cardiac muscle has increased contractile force.
• D) Cardiac muscle relaxes, while smooth muscle is stimulated to increase activity.