The primary site of gastrointestinal (GI) absorption of a drug is the:
A) esophagus
B) stomach
C) small intestine
D) large intestine
C) small intestine
The small intestine is the primary site of GI absorption of a drug, because of its very large surface area, across which drugs may diffuse. Acids are normally absorbed more extensively in the intestines that in the stomach even though the intestines have a higher pH. The higher the pH, the more alkaline; the lower the pH, the more acidic.
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What is the mechanism of action of codeine in treating coughs?
A) Works on CNS to suppress cough centers in the medulla oblongata. B) Elevates the threshold for cough in the medulla oblongata. C) Thins mucus and lubricates the irritated respiratory tract. D) Acts as vasoconstrictor and shrinks dilated blood vessels.
The leading cause of death in persons ages 1-44 years is:
A) unintentional injury. B) cardiovascular disease. C) heart attack. D) cancer.
Which of the following is not specified as a requirement on an MSDS??
A) First aid measures B) Prevention C) Physical and chemical properties D) Disposal
Which of the following is the volume of air that can be forcefully exhaled in one breath?
A. Forced vital capacity B. Forced expiratory volume C. Maximal midexpiratory flow D. Expiratory reserve volume