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.
• Why do enzymes require stable conditions to function?

  Enzymes cannot work well if the conditions around them change too much.
• What are the internal conditions that homeostasis helps to maintain in the human body?

  Homeostasis helps to maintain blood glucose concentration, body temperature, and water levels constant.
• What are the key features of automatic control systems in the body?

  • Involves the nervous system or hormones
  • Receptor cells detect changes (stimuli)
  • Information is sent to a Coordination Center
  • Coordination Center processes information
  • Instructions are sent to an effector (muscle or gland)
  • Effector carries out the response
• What is a stimulus in the context of homeostasis?

  A stimulus is a change to the environment that is detected by receptor cells.
• What role do receptor cells play in automatic control systems?

  Receptor cells detect changes in the environment and pass information to a Coordination Center.
• What is the function of a Coordination Center in the body?

  The Coordination Center receives and processes information from receptor cells.
• What is the role of an effector in an automatic control system?

  An effector is a muscle or gland that carries out the response to restore the optimum level.
• What are the components of an automatic control system in homeostasis?

  1. Stimulus
  2. Receptor
  3. Coordination Center
  4. Effector
  5. Response
• What happens to blood glucose concentration during exercise?

  Blood glucose concentration can fall due to respiration using glucose for energy.
• How does sweating relate to homeostasis?

  Sweating helps to cool the body down, maintaining a stable body temperature during exercise.
• In what ways can homeostasis be disrupted during physical activity?

  Homeostasis can be disrupted by changes in blood glucose concentration, body temperature, and water levels.