Question 1
The semilunar valves open when the
◦ atrial pressure exceeds the ventricular pressure.
◦ ventricular pressure exceeds the aortic and pulmonary arterial pressures.
◦ impulse arrives at the AV node.
◦ atrial and ventricular pressures are equal.
Question 2
The parasympathetic nervous system causes
◦ pupillary dilation.
◦ increase in blood pressure.
◦ slowed digestion.
◦ decrease in heart rate.