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Description
In this video lesson, Paul Andersen explains how organisms respond to the external environment. He begins with a discussion of behavioral responses like hibernation and migration. He ends with a discussion of physiological responses like shivering and sweating. Organisms respond to their environment in order to maintain homeostasis.--Publisher.
Description
In this video lesson, Paul Andersen explains how feedback loops allow living organisms to maintain homeostasis. He uses thermoregulation in mammals to explain how a negative feedback loop functions. He uses fruit ripening to explain how a positive feedback loop functions. He also explains what can happen when a feedback look is altered. Diabetes mellitus is caused by an alteration in the blood glucose feedback loop.--Publisher.
3) Homeostasis
Description
Homeostasis is a state of balance inside the body. The body maintains homeostasis by controlled releases of hormones (chemicals). The release of hormones is controlled by negative feedback, much the same way a house thermostat works. When the temperature rises above a set point, or normal range, the thermostat turns on the air conditioner. When the temperature once again falls within normal range, the thermostat signals the air conditioner to turn...
Author
Description
"Jonathan Haidt skillfully combines two genres-philosophical wisdom and scientific research-delighting the reader with surprising insights. He explains, for example, why we have such difficulty controlling ourselves and sticking to our plans; why no achievement brings lasting happiness, yet a few changes in your life can have profound effects, and why even confirmed atheists experience spiritual elevation. In a stunning final chapter, Haidt addresses...
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