Nicotine acts in the brain by
A. increasing serotonin reuptake.
B. enhancing GABA's inhibitory effects.
C. reducing blood flow to the cerebral cortex.
D. first stimulating and then blocking cholinergic receptors.
Question 2
Annual smoking attributable mortality in the U.S. is estimated at
A. 2,000.
B. 10,000.
C. 40,000.
D. 440,000