Chapter 2 Vocab #1 Crossword

the uptake of essential nutrients and drugs into the blood stream
a dependence characterized by a perceived need to take a drug to attain the psychological and physical effects of mood-altering substances
the strength by which a particular chemical messenger binds to its receptor site on a cell
a drug that binds to a particular receptor site and triggers the cells response in a manner similar to the action of the body's own chemical messenger
a substance that produces an allergic response
an instance in which the immune system overreacts to an otherwise harmless substance
a severe allergic response resulting in immediate life-threatening respiratory distress, usually followed by vascular collapse and shock and accompanied by hives
swelling under the skin that can be a life-threatening allergic reaction, manifested by swelling of the tongue lips or eyes
a drug that binds to a receptor site and blocks the action of the endogenous messenger or other drugs
a foreign substance or toxin introduced into the body that stimulates an immune response
the fraction of drug made available at the site of physiological activity
a barrier that prevents many substances from entering the cerebrospinal fluid (CSF) from the blood
a point at which no clinical response occurs with increased dosage of a drug
the rate at which a drug is eliminated from a specific volume of blood per unit of time
a process whereby a drug blocks enzyme activity and impairs the metabolism of another drug