Introducing Homeostasis (VCE SSCE Biology): Flashcards
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Homeostasis definition
Homeostasis definition
Maintains internal environment within set limits for cells
Optimal body temperature range
Optimal body temperature range
Optimal blood pH range
Optimal blood pH range
What is a stimulus
What is a stimulus
Change in external or internal environment
What is a receptor
What is a receptor
Structure that detects a signal or environmental change
Thermoreceptors detect
Thermoreceptors detect
Changes in temperature
Chemoreceptors detect
Chemoreceptors detect
Changes in chemical concentration
Positive feedback system
Positive feedback system
Response increases the initial stimulus
Negative feedback system
Negative feedback system
Response counters the stimulus
Set point in homeostasis
Set point in homeostasis
Value the body aims to maintain for a given variable