The babies are born dependent on cocaine b. There is a high incidence of various birth defects c. All of the above 15. A drug will be best able to cross through a membrane if it is a. Without regard to barriers to action, the amount of drug available at a receptor site is directly proportional to a. the level of blood flow to that site b.
Many psychoactive drugs have affinities for specific brain regions.
The half-life of a drug is the time it takes for blood levels of a drug to a. climb to half of their maximum value b. drop to half, after equilibrium is achieved c. reach half the level found in extracellular fluid d. reach equilibrium with blood levels of the drug s metabolites e. reach equilibrium with the amount of drug being excreted in the urine 23. Barbiturates given to an alcoholic who has refrained from drinking for a while before surgery would probably a. produce a longer lasting anesthesia than in a nonalcoholic b. produce a deeper anesthesia than in a nonalcoholic c. produce an almost immediate overdose d. produce a lighter anesthesia than in a nonalcoholic e.