homeostasis

• What is the definition of homeostasis?

  Homeostasis is the regulation of the internal conditions of a cell or organism to maintain optimum conditions for function in response to internal and external changes.
• What are the key internal conditions that homeostasis regulates in the human body?


  • Blood glucose concentration
  • Body temperature
  • Water levels
• Why do enzymes require stable conditions to function?

  Enzymes cannot work well if the conditions around them change too much.
• What is the role of automatic control systems in homeostasis?

  Automatic control systems keep the internal conditions of the body as constant as possible.
• What are the two systems that can be involved in automatic control systems in the human body?

  The nervous system and hormones.
• What is a stimulus in the context of homeostasis?

  A stimulus is a change to the environment.
• What do receptor cells do in an automatic control system?

  Receptor cells detect changes in the environment.
• What is the function of the Coordination Center in an automatic control system?

  The Coordination Center receives and processes information from receptor cells.
• What is the overall process of homeostasis in the body?

  It involves a stimulus, receptor, Coordination Center, effector, and response.
• What is an effector in the context of homeostasis?

  An effector is a muscle or gland that carries out a response.
• What happens to blood glucose concentration during exercise?

  • Blood glucose concentration falls
  • Respiration uses glucose to generate energy
• How do internal and external conditions affect homeostasis?

  • Internal conditions: e.g., glucose concentration
  • External conditions: e.g., skin temperature
  • Both require regulation to maintain homeostasis