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Homeostasis
Homeostasis
The body maintains a steady state, through a series of monitored adjustments
Homeostasis is a process by which a constant internal environment is maintained despite changes in the external environment
Blood Sugar
Tolerance Ranges
Homeostatic Systems• 3 Components:
– Monitor: special sensors– Coordinating centre: relays information to
appropriate regulator– Regulator: helps restore normal balance
Example – Exercising
Feedback Systems
Negative Feedback vs. Positive Feedback
Negative FeedbackProcess by which a mechanism is activated to restore
conditions to their original state
Positive FeedbackProcess by which a small effect is amplified
Ex: the contractions in child birth caused by the release of oxytocin
Explain in your own words the concept of homeostasis
Differentiate between positive and negative feedback
Create a flow chart for the exercise activity
Homework
• Research what the lower and upper limits are for 2 of the following and what happens to the body when we go outside the limits.
– Body temperature– Blood sugar– Blood pH– Systolic blood pressure
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