Routine vaccination in infancy and childhood has made new __________ outbreaks unlikely in industrialized nations

The term "personality type" refers to

a. a particular pattern of thinking and behaving that prevails across time and situations, differentiating one person from another. b. different categories into which personality characteristics can be assigned. c. an enduring personal characteristic that reveals itself in a particular pattern of behavior across a variety of situations. d. individual differences in cognition and behavior. e. the personal tendencies that appear in childhood and are modified by subsequent experience.

After a nerve impulse occurs, the neuron is temporarily less likely to fire because

a. the cell is still above its resting level. b. potassium ions flow out of the neuron while the membrane gates are open. c. acetylcholine acts as an inhibitor. d. a positive after-potential has occurred.