Neurons make up only about % of the cells in the brain and about of its volume

________ refers to a temporary stress-related pattern of arousal with a clear onset and endpoint

a. A residual stress pattern b. Primary stress appraisal c. Acute stress d. Biarousal e. A "fight-or-flight" stressor

__________ refers to the belief that nothing can alter one’s circumstances or outcomes, and therefore the only choice is to give up

a) Learned helplessness b) Defensive pessimism c) Illusory correlation d) Deferred optimism