A natural or synthetic narcotic substance is referred to as an ____________________

The period from the time that a drug's level drops below its minimum effective concentration until it is eliminated from the body is called:

a. duration of action. c. termination of action. b. therapeutic index. d. biological half-life.

Why does absolute anemia happen?

a. hyperventilation syndrome b. excellent nutritional intake c. increase in plasma volume d. because the fetus draws iron stores