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HOMEOSTASIS & BODY SYSTEMS The Balance of Life

Homeostasis & Body Systems

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Homeostasis & Body Systems. The Balance of Life. Homeostasis. The body’s ability to maintain stable internal conditions even though the outside world changes constantly. Examples: Temperature Blood sugar pH Nutrients Waste. Negative Feedback. - PowerPoint PPT Presentation

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Page 1: Homeostasis & Body Systems

HOMEOSTASIS & BODY SYSTEMSThe Balance of Life

Page 2: Homeostasis & Body Systems
Page 3: Homeostasis & Body Systems

Homeostasis

The body’s ability to maintain stable internal conditions even though the outside world changes constantly. Examples: Temperature Blood sugar pH Nutrients Waste

Page 4: Homeostasis & Body Systems
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Negative Feedback

The variable triggers an opposite response to return the body to normal.

Page 6: Homeostasis & Body Systems

Negative Feedback

Negative feedback loops are self-terminating. Why?

Nearly all feedback in the body is negative. Why do you think that is?

Page 7: Homeostasis & Body Systems

Positive Feedback

Stimulus causes a response that increases the stimulus.

Page 8: Homeostasis & Body Systems

When does positive feedback end?

Page 9: Homeostasis & Body Systems

Body Systems