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 happens to blood glucose concentration during exercise?

  It can fall due to increased respiration
• What are the three internal conditions homeostasis regulates in the human body?

  Blood glucose concentration, body temperature, water levels
• What are the general features of an automatic control system?

  • Involves nervous system or hormones
  • Detects changes via receptor cells
  • Processes information in a Coordination Center
  • Sends instructions to an effector
  • Carries out response to maintain optimum levels
• 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 an effector in the context of homeostasis?

  A muscle or gland that carries out a response
• What is the response of an effector in homeostasis?

  To restore the optimum level
• What components are involved in the homeostasis process?

  1. Stimulus
  2. Receptor
  3. Coordination Center
  4. Effector
  5. Response
• Where can you find questions on homeostasis?

  In the vision workbook