Homeostasis

• What is the definition of homeostasis?

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

  They cannot work well with changing conditions
• What are the three internal conditions homeostasis regulates in the human body?

  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 an effector in the context of homeostasis?

  A muscle or gland that carries out a response
• How do automatic control systems maintain homeostasis?

  By responding to stimuli through receptors and effectors
• What is the process of homeostasis in response to exercise?

  1. Increased respiration uses glucose
  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 types of systems involved in automatic control in the body?

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

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

  Acts as a Coordination Center
• How does the body respond to a rise in body temperature?

  By sweating to cool down
• What is the significance of maintaining optimum conditions in the body?

  Ensures enzymes and cells function effectively