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

question 36

Multiple Choice

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

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