Homeostasis in Human:

 The following are the main organs which work for homeostasis.
Lungs remove excess carbon dioxide and keep it in balance.
Skin performs role in the maintenance of body temperature and also removes excess water and salts.
The kidney filter excess water, salts, urea, uric acid etc. from the blood and forms urine.
Skin:
        We know that our skin consist of two layers. Epidermis is the outer protective layer without blood vessels while dermis is the layer containing blood vessels, sensory nerve endings, sweat and oil glands, hairs and fat cells.
Skin performs important role in the regulation of body temperature. The thin layer of fat cells in the dermis insulates the body. Contraction of small muscles attached to hairs form ‘Goosebumps’. It creates an insulating blanket of warm air.
Similarly, skin helps in providing cooling effect when sweat is produced by sweat glands and excess body heat escapes through evaporation. Metabolic wastes such as excess water, salts, urea, and uric acid are also removed in sweat.
Lungs:
            In the previous chapter we learned how lungs maintained the concentration of carbon dioxide in blood. Our cells produced the carbon dioxide when they perform respiration. From cells, carbon dioxide is diffused into tissue fluid and form there into blood. Blood carries carbon dioxide to lungs from where it is removed in air.