How many Americans ages 18–29 use social networking web sites?

Suppose you wanted to prescribe a hypothetical drug that would have an overall excitatory effect on the nervous system. Which would you choose?

A. a glutamate metabolizer B. a dopamine metabolizer C. a GABA antagonist D. a norepinephrine antagonist

The visual cortex is comprised of the visual processing areas in the

a. temporal lobes. b. occipital lobes. c. parietal lobes. d. Both B and C e. Both A and B