Distinguish the biological factors involved in the regulation of hunger, including hormones and the role of the hypothalamus.
What will be an ideal response?
The biological facts that influence the regulation of hunger include activation of the hypothalamus, which plays a role in recognizing hunger, feeling full after eating, and releasing hormones that regulate eating. Further, the amygdala and visual cortex may signal a need to eat when something looks appetizing or is associated with fond memories. The stomach sends signals to the brain that indicate the nutrient levels in the stomach and the degree of fullness of the stomach. Hormones are also released through three main hormonal subsystems: The glucose-blood sugar subsystem signals hunger when glucose levels drop below a critical point. Insulin helps to move glucose into the blood so it can be used as energy. Ghrelin stimulates strong hunger signals in the brain, while cholecystokinin signals fullness. The hormone leptin is found in fat cells, and when levels of leptin are low, it stimulates eating.
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A theory is not necessarily correct; rather, it is a generally accepted explanation for evidence, as it is understood.
Answer the following statement true (T) or false (F)
The statement "Cells that fire together wire together" implies that, as a result of information exchange between two neurons:
A) the axons of the two neurons fuse into one. B) further communication between the two neurons becomes more difficult. C) the axon of one neuron comes to physically touch the dendrite of another. D) communication between the two neurons is facilitated as connections are strengthened.
In their research, both Pavlov and Thorndike sought a principle that would
a. be equally applicable to humans and nonhuman animals. b. show how the brain controls behavior. c. be easily replicated in other laboratories. d. describe how individual environments changed behavior and the neural mechanisms that underlie behavior. e. establish, once and for all, that the behavior of learning is like any other behavior in terms of its reliance on past experiences.
If an object is ______ typical of a concept, then people will recall ______ members of that concept.
A. less; more B. more; fewer C. less; fewer D. approximately; no