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January 26 - Homeostasis and Negative Feedback Homeostasis...

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January 26, 2010 Homeostasis and Negative Feedback Homeostasis: State of balance in one’s environment Negative Feedback: Tells a gland when to stop secreting hormones (brain’s signal) ACTH stimulates the Adrenal Glands to secrete cortisol/ norepinephrine/ epinephrine. As your blood stream fills out YOUR BRAIN starts dampening the hormone release. There are diseases that occur from excess ACTH, Cortisol, NE, ect and the opposite is true. Be sure to know: Where things are located, what they are called and how they are spelled 1 st Behavior: Biological Rhythms A regular pattern in bodily changes= Biological Rhythms Motivation is effected by biological rhythms. Different Kinds of Biological Rhythms: Daily Basis= Circadian Rhythms o Sleep-Wake Cycle Sleep-Wake Cycle Sleep in the night (awake in the day) Dinurturnal NOT nocturnal Vampires o 1700’s witnesses began noticing odd people. Insomnia, nocturnal, bite people, hypersexual, hypersensitive, didn’t see in mirrors, and aggression. People began to
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January 26 - Homeostasis and Negative Feedback Homeostasis...

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