Slight vasodilation in an arteriole prompts a ________.a. slight increase in resistanceb. huge increase in resistancec. slight decrease in resistanced. huge decrease in resistance

In the case where a single valve unit in a vein fails so the weight of the blood is held up by the next lower vein is called a(n)___.     varix     hemorrhage     aneurysm     AMI

In a patient with _______ some of the oxygenated blood returning to the left atrium would be pumped to the lungs a second time rather than going directly into systemic circulation.   A a hole in the ventricular septum   B sclerotic aortic semilunar valve that failed to fully open   C an insufficient bicuscpid valve that failed to fully close

This is used to facilitate the insertion of drainage devices into a venous structure     A. Groove director     B. Electric spatula     C. Arterial tube hemostats     D. Cavity injector