Homeostasis

• What is homeostasis

  The regulation of the internal conditions of a cell or organism to maintain the optimal conditions to function in response to internal and external changes
• What 6 things are controlled in the human body

  • blood pressure
  • Blood glucose levels
  • pH levels
  • temperature
  • Oxygen levels
  • Water levels
• What 3 things is homeostasis necessary for

  1. Maintaining optimal enzyme conditions
  2. Providing cells with metabolites for respiration
  3. Preventing damage from osmosis
• Thermoregulatory centre

  • vasodilation
  • Sweat
  • Hairs lie flat
• What is the hair erector muscle and function

  A muscle attached to hair follicles which when triggered causes the hair to stand up, trapping a layer of air for insulation. This causes goosbumps
• What does the thermoregulatory centre do

  Interprets signals from sensory neurones and coordinates a response