homeostasis

• describe homeostasis

  regulation of internal conditions to maintain optimum conditions for response to internal and external changes and enzyme and cell function
• give internal conditions regulated by homeostasis

  blood glucose concentration, body temperature and water content
• give components included in control systems

  receptor, coordination centre and effector
• describe receptor

  detects change
• describe coordination centre

  receive and process information to organise response - brain and spinal cord
• describe effector

  provide response to restore optimum levels - muscles and glands
• how is body temperature monitored and controlled

  receptors in thermoregulatory centre and skin
• give response to too high body temperature

  • vasodilation
  • sweat produced
• give response to too low body temperature

  • vasoconstriction
  • no sweat produced
  • shivering
  • hairs stand up on skin