Homeostatic Organs

• Cells: change composition of blood as they remove nutrients and O2 and add wastes and CO2
• Heart: keeps blood pressure constant to deliver oxygen and nutrients around body
• Skin: to maintain heat exchange with external environment
• Kidneys: regulate water and salt levels (osmoregulation) and the removal of wastes like urea (excretion)
• Lungs: regulate gas exchange
• Intestines: supply soluble nutrients and water to blood
• Liver: regulates blood solutes and removes toxins