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Describe what is meant by a trade-off in physiological
functions, and give an example.
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- Explain the difference between tonic and antagonistic control of homeostatic balance. Fig. 6.15 Give two examples of each.Define homeostasis. What happens when homeostasis fails? List the three basic components of a control system and give an example. Describe the components of a reflex pathway. Contrast the response loop and the feedback loop. Explain the relationship between a regulated physiological variable and its setpoint. Is the physiological variable exactly at its setpoint? Compare and contrast negative and positive feedback. Give a biological example of each. Is the setpoint constant or can it change over time? If setpoints can change over time, what is this called? Chapter 2:What is the physiological basis of the phenomenon called "shifting of physiological zero?"
- Suppose a researcher is interested in examining the effects of mood and food deprivation on eating. Female participants listen to one of two types of music to induce either a happy or a sad mood, following either 19 hours of food deprivation (breakfast and lunch are skipped) or no deprivation. The participants are then given free access to food in a controlled laboratory setting, and the amount of food consumed is measured for each individual. How many independent variables or factors does this study have? What are they? Describe this study using the notation system that indicates factors and numbers of levels of each factor. Use a matrix to diagram the structure of the study.Explain the difference between positive feedback and negative feedback loops with examplesWhat is physiological antagonism?