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Homeostasis is the regulation of internal environment in humans and animals.

Their are principally 6 substances that the body has to control:

This control is achieved by the use of various organs and glands in the body.

The hypothalamus monitors water-contents, carbon dioxide concentration and blood temperature, sending nerve impulses to the pituitary gland and skin.

The pituitary gland makes ADH (Anti-diuretic hormone) to control water content in the body.

The muscles can shiver to produce heat if body temperature is too low.

The pancreas produces insulin to control blood-sugar concentration.

The lungs take in oxygen and give out carbon dioxide.

The kidneys remove urea and adjust ion and water concentration.