Homeostasis

• What is homeostasis?

  It's maintaining a stable internal environment
• Why do cells need homeostasis?

  To function properly under optimal conditions
• What conditions must be regulated for cells to function?

  Temperature, acidity, glucose, and water levels
• How does the body regulate internal conditions?

  By keeping levels around the right bounds
• What is the definition of homeostasis?

  Regulation of internal conditions for stability
• How does the body maintain homeostasis in extreme conditions?

  By regulating internal environment despite external changes
• What are the three main components of automatic control systems?

  Receptors, coordination centers, and effectors
• What do receptors do in homeostasis?

  They detect changes in conditions
• What role do coordination centers play?

  They interpret changes and decide actions
• What are effectors in the context of homeostasis?

  They carry out the necessary changes
• How do the nervous and endocrine systems communicate?

  Through electrical impulses and hormones
• How does the nervous system differ from the endocrine system?

  Nervous system is fast; endocrine is slower
• What is negative feedback in homeostasis?

  It reverses changes to maintain stability
• What happens when glucose levels rise too high?

  Negative feedback decreases glucose levels
• What occurs if body temperature drops too low?

  Receptors detect cold and signal effectors
• What response occurs when body temperature rises too high?

  Effectors like sweat glands activate
• What is the process of maintaining homeostasis through negative feedback?

  • Detect change (e.g., low glucose)
  • Coordination centers interpret the change
  • Effectors carry out responses (e.g., increase glucose)
  • Repeat process for any fluctuations
• Describe the loop of homeostasis regulation.

  1. Change detected by receptors
  2. Coordination centers interpret the change
  3. Effectors respond to restore balance
  4. Process repeats for fluctuations
• What are the roles of the nervous and endocrine systems in homeostasis?

  • Nervous system: Fast, precise electrical impulses
  • Endocrine system: Slower, longer-lasting hormonal responses