Drug Ed Ch 4

Natural chemicals in the brain that produce effects similar to those of morphine and other opium-derived drugs are called A. endorphins. B. depressants. C. amphetamines. D. ecstasy.

A. endorphins.

Which of these is NOT one of the four important regions found in every neuron? A. glia B. dendrites C. axon D. cell body

A. glia

The ______________ is an important link between the brain and the pituitary gland, and is involved in feeding, drinking, temperature regulation, and sexual behavior. A. hypothalamus B. cerebellum C. limbic system D. cerebral cortex

A. hypothalamus

Parasympathetic and sympathetic refer to the two branches of the A. glia. B. autonomic nervous system. C. axon. D. limbic system.

B. autonomic nervous system.

Neural centers controlling vomiting and respiration are found in the A. frontal lobe. B. brainstem. C. cerebellum. D. pituitary gland.

B. brainstem.

The process of maintaining our internal environment (temperature, water balance, etc.) within certain limits is called A. the blood-brain barrier. B. homeostasis. C. sympathetic. D. inhibition.

B. homeostasis.

Cocaine selectively blocks Na+ (sodium) channels, which is the mechanism that leads to A. CNS stimulation. B. local anesthetic effects. C. increased heart rate. D. cocaine dependence.

B. local anesthetic effects.

Gated ion channels for sodium and potassium open and close in rapid succession, causing the neuron to depolarize and then return to its normal resting level, during each A. transporter. B. homeostasis. C. action potential. D. metabolism.

C. action potential.

Weight control, aggression, impulsivity, and psychological depression have all been associated with A. GABA receptors. B. endorphins. C. serotonin pathways. D. the parasympathetic branch.

C. serotonin pathways.

The process in which enzymes within neurons convert precursors into neurotransmitter molecules is called A. homeostasis. B. uptake. C. synthesis. D. depolarization.

C. synthesis.

______________ results from a loss of myelin wrappings. A. Alzheimer's disease B. Parkinson's disease C. Schizophrenia D. Multiple sclerosis

D. Multiple sclerosis

Parkinson's disease produces tremors and muscular rigidity because of damage to A. acetylcholine neurons in the parasympathetic branch. B. the blood-brain barrier. C. norepinephrine neurons in the locus ceruleus. D. dopamine neurons in the nigrostriatal pathway.

D. dopamine neurons in the nigrostriatal pathway.

In addition to neurons, the brain contains an even larger number of another cell type known as A. mitochondria. B. pseudopodia. C. serotonin. D. glia.

D. glia.

Which chemical pathway appears to be important both in some types of psychotic behavior and in the reinforcing properties of various drugs? A. acetylcholine pathway from the nucleus basalis B. serotonin pathway from the raphe nuclei C. glutamate pathway D. mesolimbic dopamine pathway

D. mesolimbic dopamine pathway

The neurotransmitter at the end organ of the sympathetic branch of the autonomic nervous system is A. serotonin. B. dopamine. C. GABA D. norepinephrine.

D. norepinephrine.