Contrast the roles of ghrelin and of cholecystokinin (CCK) for the control of eating
What will be an ideal response?
Answer: Ghrelin is released from the stomach when it and the duodenum are empty of food. Injection of ghrelin stimulates eating, while food intake suppresses ghrelin levels. CCK is released into blood upon the entry of fats into the duodenum. CCK is thus in a position to provide a satiety cue to the brain. Injection of CCK reduces eating in the short-term. Obesity is noted in rats for which a genetic mutation impairs the production of CCK receptors.
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Humanistic psychologists focus on our __________ experiences, including our __________.
A. unconscious; fantasies B. conscious; self-concept C. subconscious; introversion and extroversion D. conscious; archetypes
For most people, what reaction results from the death of a spouse?
A. feelings of resentment and guilt B. a reexamination of personal and financial goals that were set aside during the course of the marriage C. profound feelings of loss and drastic changes in economic and social status D. a sense of loss coupled with enthusiasm for starting a new life
Prolactin stimulates the
a. production of ova. c. production of sperm. b. onset of labor. d. production of milk.
We tend to organize concepts into ___________, which relate the concepts according to levels
a. hierarchies c. functions b. channels d. none of these