Final answer:
Vasoconstrictors would treat hypertension by increasing blood pressure. Examples of vasoconstrictors include angiotensin II and endothelin. Vasodilators, on the other hand, relax blood vessels and decrease blood pressure.
Step-by-step explanation:
Vasoconstrictors would treat hypertension. Vasoconstrictors are substances that cause the narrowing of blood vessels, which helps increase blood pressure. Examples of vasoconstrictors include angiotensin II and endothelin. On the other hand, vasodilators are substances that cause the relaxation and widening of blood vessels, resulting in decreased blood pressure. Nitric oxide and certain paracrine chemicals like adenosine and nitric oxide are examples of vasodilators.