Question

Which type of absorption occurs when a nitroglycerin tablet is dissolved under the tongue to dilate coronary arteries and relieve the pain of angina pectoris?

a) Active absorption
b) Passive absorption
c) Topical absorption
d) Sublingual absorption

Answer 1

Sublingual absorption is the method used when a nitroglycerin tablet is placed under the tongue to relieve angina, facilitating the release of nitric oxide and improving blood flow.

Step-by-step explanation:

The type of absorption that occurs when a nitroglycerin tablet is dissolved under the tongue to dilate coronary arteries and relieve the pain of angina pectoris is d) Sublingual absorption. Sublingual administration is a method of delivering a substance quickly into the bloodstream by placing it under the tongue. This method is used for the rapid effect it has, as it allows the substance to enter the bloodstream directly without passing through the digestive system. Nitroglycerin is a common treatment for angina pectoris and works by releasing nitric oxide, a vasodilator that relaxes the smooth muscles in the coronary arteries, increasing blood flow and oxygen to the heart muscle, thereby relieving pain.