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Understanding Homeostasis: Maintaining Internal Body Balance and Stability

Explore the key concepts of homeostasis including stimulus, receptor, control center, effector, and indicators like body temperature and blood glucose, highlighting the importance of stable internal conditions for survival.

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HOMEOSTASIS  Maintaining Internal Balance Science 10
Learning Objectives • Define homeostasis. • Define stimulus, receptor, set point, control center, effector, and response. • Identify the indicators of homeostasis. • Explain why stable internal conditions are important.
What is Homeostasis? Homeostasis is the process by which the body maintains a relatively stable internal environment despite changes inside or outside the body. • The body is constantly exposed to changes. • It keeps internal conditions within a normal range. • Different body systems work together. • This balance is necessary for survival.
Example • Sweating • Shivering • Feeling thirsty
STIMULUS A stimulus is any change inside or outside the body that triggers a response. • Starts the homeostatic process. • May come from inside or outside the body.
RECEPTOR A receptor detects a stimulus. • Receives information. • Sends signals to the control center. Example: Temperature receptors in the skin.
SET POINT, CONTROL CENTER, EFFECTOR Set Point – Normal value the body maintains. Control Center – Receives information and decides the response. Effector – Carries out the response to restore balance.
INDICATORS OF HOMEOSTASIS Measurable conditions that show whether the body is stable. • Body Temperature • Blood Glucose Level • Blood Pressure
Learning Objectives • Define homeostasis. • Define stimulus, receptor, set point, control center, effector, and response. • Identify the indicators of homeostasis. • Explain why stable internal conditions are important.
Understanding Homeostasis: Maintaining Internal Body Balance and Stability