Final answer:
The dicrotic notch refers to a small dip in blood pressure caused by the closure of the semilunar valves during ventricular diastole.
Step-by-step explanation:
The statement that the dicrotic notch refers to the brief rise in pressure caused by the closure of the AV valves during ventricular systole is false. The dicrotic notch actually refers to a small dip in blood pressure caused by the closure of the semilunar valves (aortic and pulmonary valves) during ventricular diastole, as the ventricular muscle relaxes. This dip can be seen in blood pressure tracings.