Homeostasis and response

• 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 optimal enzyme action and cell function
• Homeostasis includes the control of:

  • blood glucose concentration
  • body temperature
  • water and ion levels
• The automatic control system may involve:

  • electrical responses using the nervous system.
  • chemical responses using hormones.