Final answer:
ACE inhibitors relax the muscles of the blood vessels and reduce the workload of the heart.
Step-by-step explanation:
Angiotensin Converting Enzyme (ACE) inhibitors such as Lisinopril and Enalapril are medications commonly used to treat high blood pressure and heart failure. These medications work by blocking an enzyme that converts angiotensin I to angiotensin II, a hormone that causes blood vessels to constrict and the release of aldosterone, a hormone that increases sodium and water retention. By inhibiting the conversion of angiotensin I to angiotensin II, ACE inhibitors relax the muscles of the blood vessels, reducing their constriction, and ultimately reducing the workload of the heart.
Learn more about ACE inhibitors and their effects on blood vessels and the heart