Final answer:
Arterioles and veins can constrict to cause an increase in blood pressure.
Step-by-step explanation:
When a blood vessel constricts, it decreases the radius, increasing resistance and pressure, which in turn leads to an increase in blood pressure. The blood vessels that can constrict in order to cause an increase in blood pressure are arterioles and veins. Arterioles, which are often referred to as resistance vessels, respond to sympathetic input by constricting, thereby increasing vascular resistance and blood pressure. Veins, on the other hand, constrict to increase venous return to the heart, which in turn increases blood pressure.