Homeostasis

• What is the definition of homeostasis?

  Regulation of internal conditions for optimum function
• Why do enzymes require stable conditions?

  They cannot function well with changing conditions
• What are the three internal conditions maintained by homeostasis?

  Blood glucose, body temperature, water levels
• What are the key features of automatic control systems in the body?

  • Involves nervous system or hormones
  • Detects changes via receptor cells
  • Processes information in a Coordination Center
  • Sends instructions to effectors (muscles or glands)
  • Maintains optimum internal conditions
• What is a stimulus in the context of homeostasis?

  A change to the environment
• What role do receptor cells play in homeostasis?

  They detect changes in the environment
• What is the function of the Coordination Center?

  Processes information from receptor cells
• What is the role of effectors in homeostasis?

  Carry out the response to maintain conditions
• How do automatic control systems maintain internal conditions?

  By detecting stimuli and coordinating responses
• What is the process of homeostasis in response to exercise?

  1. Respiration uses glucose for energy
  2. Blood glucose concentration falls
  3. Body temperature rises
  4. Water is lost through sweating
  5. Homeostasis maintains constant internal conditions
• What are the two systems involved in automatic control systems?

  Nervous system and hormones
• What happens to the body during exercise regarding homeostasis?

  It adjusts blood glucose, temperature, and water
• What is the role of the brain in homeostasis?

  Acts as a Coordination Center
• How does the body respond to a stimulus?

  By sending instructions from the Coordination Center
• What is the significance of maintaining optimum conditions in the body?

  Ensures enzymes and cells function effectively