Question 1
Stimulation of the beta receptors on heart muscle results in
◦ cAMP signaling.
◦ increased sensitivity to acetylcholine.
◦ decreased force of cardiac contraction.
◦ decreased rate of contraction.
◦ All of the answers are correct.
Question 2
Drugs known as beta blockers will
◦ decrease the end-systolic volume.
◦ decrease heart rate.
◦ increase heart rate.
◦ increase stroke volume.
◦ increase cardiac output.