Homeostatis

• What is homeostasis?

  Process of maintaining a stable internal environment
• Why do cells need homeostasis?

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

  Temperature, acidity, glucose, and water levels
• Do our body conditions remain constant?

  No, they fluctuate within small bounds
• How can we define homeostasis in terms of internal and external conditions?

  Regulation of internal conditions despite external changes
• How does the body maintain a temperature of 37 degrees in extreme conditions?

  By regulating body functions automatically
• What are the three main components of automatic control systems?

  Receptors, coordination centers, and effectors
• What do receptors do in the control system?

  Detect changes in conditions
• What role do coordination centers play?

  Interpret changes and decide actions
• What are effectors in the control system?

  Muscles or glands that carry out changes
• How do the nervous and endocrine systems communicate?

  Nervous system uses electrical impulses; endocrine uses hormones
• How does the speed of response differ between the nervous and endocrine systems?

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

  Process that reverses changes to maintain balance
• 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 trigger shivering
• What happens if body temperature rises too high?

  Receptors detect heat and trigger sweating
• How does the process of homeostasis function as a loop?

  It adjusts levels back to normal through feedback
• What is the overall process of homeostasis?

  • Maintaining a stable internal environment
  • Regulating conditions like temperature and glucose
  • Responding to internal and external changes
  • Using automatic control systems