1. Which of the following is not found at a synapse?
axon hillock
vesicles
cleft
receptor sites
transmitter

2. Which of the following is always an inhibitory transmitter?
norepinephrine
epinephrine
dopamine
GABA
PCPA

3. What happens to drugs that are administered intranasally?
A. they are absorbed through the mucous membranes of the nasal cavity
B. they are inhaled into the lungs and absorbed from there
C. they run down the throat into the stomach
D. none of the above
E. A, B, and C are all correct

4. Lipid is another name for
skin.
bone.
fat.
muscle.
membrane.

5. This neurotransmitter is responsible for food intake, weight control, and impulsivity control.
Dopamine
GABA
Serotonin
Acetylcholine

6. A superconducting magnet is used in which type of imaging?
EEG
PET
SPECT
MRI
none of the above

7. The greatest concern about IV drug use is
the danger of unprotected sex that accompanies this behavior.
the danger of infection.
the danger of overdosing.

8. All of the following are categories of psychoactive drugs except
stimulants.
hallucinogens.
marijuana
caffeine.

9. Drugs administered by inhalation
are not as potent as when they are administered by I.V.
can never be eliminated in the breath.
must be volatile gases.
are delivered to the brain more rapidly than drugs administered by I.V.
have a longer duration of action than when administered by I.V.

10. The brain system that seems to be in control of emotions is
theRaphé system.
the limbic system.
the central gray.
the basal ganglia.
the RAS.

11. The effect of a drug is directly related to
the concentration of the drug at its site of action.
the dose of the drug.
the number of pills consumed.
the size of the tablet.
the concentration of the vehicle.

12. Which of the following can alter the rate of metabolism of some drugs?
A. age
B. species
C. use of other drugs
D. none of A, B, and C
E. A, B, and C are all correct

13. Which of the following is not a transmitter?
dopamine
acetylcholinesterase
GABA
epinephrine
norepinephrine

14. Special cells that wrap themselves around capillaries in the brain and block the pores make up the
blood-brain barrier.
the great brain barrier.
the keratin layer.
Bowman's Capsule.
passive transport layer.

15. The major excitatory neurotransmitter in the brain is
acetylcholine.
dopamine.
GABA.
endorphin.
glutamate.

16. A subcutaneous injection of a drug is sometimes known as
snorting.
skin popping.
oral administration.
an injection into the vein.

17. The ED50 is the
median lethal dose.
the median effective dose.
the medium lethal dose.
the medium effective dose.
none of the above.

18. Psychoactive drugs reach brain tissue by way of
injection.
inhalation.
lipids.
the bloodstream.

19. This neurotransmitter is responsible for the "reward" properties of electrical stimulation of the midbrain or limbic system.
Serotonin
Dopamine
Acetylcholine
Norepinephrine

20. The three main routes of administration are
oral, bloodstream, and respiration.
oral, injection, and inhalation.
oral, inhalation, and bloodstream.
oral, injection, and bloodstream.

21. When comparing the TI of two drugs
the drug with the lower TI is safer.
the drug with the higher TI is safer.
the drug with the lower TI is the most therapeutically useful.
the drug with the higher TI is the least therapeutically useful.
none of the above

22. Which of the following is NOT a part of a neuron?
dendrites
axon
glial
axon hillock
membrane

23. LD50/ED50 is the
Lethal Ratio.
Therapeutic Ratio.
Index of Safety.
Therapeutic Index.
Ratio of Safety.

24. When a drug is taken orally, it is absorbed into the system ________ than other routes of administration.
faster
slower

25. An enzyme is
a catalyst.
a metabolite.
a toxin.
a part of the kidney.
a mechanism for administering minute quantities of a drug directly into the brain.