Excitotoxicity is mediated by overstimulation exerted by which neurotransmitter

Social support networks may buffer a person against the adverse effects of stress

by (a) getting the person to appraise a given event as less negative (b) suggesting solutions to the problems that arise from the stress producing event (c) facilitating stress-reducing activities (d) giving the person someone to talk to (e) all of the above

Five minutes after birth, the majority of newborns in the United States have Apgar scores of at least 7. This statistic has not changed significantly since 1990, indicating that

a. the Apgar is not a very sensitive measure of neonatal well-being b. very sick newborns are no more likely to survive today than in 1990 c. most resuscitation efforts performed on preterm and low birthweight infants are successful d. there is still a need for a quick, easy-to-use screening procedure for newborns