Homeostasis

• What do cells use to release energy from glucose?

  Enzymes
• What do enzymes and cells require to work effectively?

  Very stable conditions
• Why do our bodies have systems in place to keep internal conditions optimum?

  For the cells to function
• What do scientists call the regulation of internal conditions?

  Homeostasis
• What is homeostasis?

  Regulation of internal conditions for optimum function
• What does homeostasis maintain optimum conditions for?

  Cell or organism function
• What does homeostasis respond to?

  Internal and external changes
• What is homeostasis all about?

  Keeping internal conditions as constant as possible
• What happens to blood glucose concentration during exercise?

  It can fall
• What happens to an athlete's body temperature during exercise?

  It will rise
• What happens to water levels in the body through sweating?

  Water is lost
• In the human body, what does homeostasis keep constant?

  Blood glucose, body temperature, and water levels
• What do automatic control systems ensure?

  Internal body conditions stay as constant as possible
• What can automatic control systems in the human body involve?

  The nervous system or hormones
• What do receptor cells detect?

  Changes in the environment
• In this case, what could environment mean?

  The body's internal conditions
• What else could environment mean?

  The body's external conditions
• What do scientists call a change to the environment?

  Stimulus
• What do receptor cells pass information to?

  A Coordination Center
• What does the Coordination Center do with information from receptor cells?

  Receives and processes the information
• What does the Coordination Center send to the effector?

  Instructions
• What is an effector?

  A muscle or a gland
• What is the job of the effector?

  Carry out the response
• What do effectors restore?

  The optimum level
• What are the components of an automatic control system?

  • Stimulus
  • Receptor
  • Coordination Center
  • Effector
  • Response