Which of the following terms would be an accurate way to describe ACE inhibitors? 

• A. Vasoconstrictor.
• B. Antibiotic.
• C. Vasodilator.
• D. Anhidrotic.
• E. Antiviral.

Answer: (C)

Verified step by step guidance

1. Step 1: Understand the function of ACE inhibitors. ACE stands for Angiotensin-Converting Enzyme, which plays a role in the body's regulation of blood pressure by converting angiotensin I to angiotensin II, a substance that causes blood vessels to constrict.
2. Step 2: Recognize that ACE inhibitors block this enzyme, preventing the formation of angiotensin II, which leads to relaxation or widening of blood vessels.
3. Step 3: Define the term 'vasodilator' as a substance that causes blood vessels to dilate or widen, reducing blood pressure.
4. Step 4: Compare the other options: 'vasoconstrictor' causes narrowing of blood vessels (opposite effect), 'antibiotic' fights bacterial infections, 'anhidrotic' relates to lack of sweating, and 'antiviral' fights viral infections.
5. Step 5: Conclude that since ACE inhibitors cause blood vessels to widen, the accurate term to describe them is 'vasodilator'.