4.5.1 - Homeostasis

• Homeostasis is the regulation of the internal conditions of a cell or organism in response to internal and external changes.
• Homeostasis is important because it keeps conditions constant for enzyme action and cell functions.
• Homeostasis includes the control of:

  blood glucose concentration

  body temperature

  • water and ion levels.
• The control systems may involve:

  responses using nerves

  • chemical responses using hormones.