Which are routes of drug excretion? (Select all that apply.)
a. GI tract; feces
b. Genitourinary (GU) tract; urine
c. Lymphatic system
d. Circulatory system; blood/plasma
e. Respiratory system; exhalation
ANS: A, B, E
The GI system is a primary route for drug excretion. The GU and the respiratory systems do function in the excretion of drugs. The lymphatic and circulatory systems are involved with drug distribution, not drug excretion.
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