homeostasis & body systems
DESCRIPTION
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 PresentationTRANSCRIPT
HOMEOSTASIS & BODY SYSTEMSThe 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
The variable triggers an opposite response to return the body to normal.
Negative Feedback
Negative feedback loops are self-terminating. Why?
Nearly all feedback in the body is negative. Why do you think that is?
Positive Feedback
Stimulus causes a response that increases the stimulus.
When does positive feedback end?
Body Systems