• The immune system is the body's defense against germ.  It includes white blood cells antibodies and the lymphatic system.
• The urinary system controls the body's water balance removing extra water as urine and getting rid of impurities in the blood.
• The respiratory system takes air into the lungs to supply oxygen and lets out waste carbon dioxide.
• The reproductive system is the smallest of all the system it is  basically the sexual organs that enable people to have children it is the only system that is different in men and women.
• The Other body system are the hormonal system controls growth and internal coordination by chemical hormones integumentary system skin hairs and nails the sensory system eye ears nose skin and balance. 

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• Your body systems are interlinked each has its own task but they are all dependent on one another.
• The skeleton supports the body protects the major organs and provides an anchor for the muscles.
• The nervous system is the brain and the nerves the body's control and communications network.
• The digestive system breaks down food into chemicals that the body can use to its advantage.