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nervous systemTHE EXCRETORY SYSTEMAll the wastes formed in the body are thrown out every day. If they remain inside your body, you will fall sick.You have a pair of bean-shaped kidneys that remove the wastes from your blood in the form of urine. Your lungs remove wastes in the form of a gas called carbon dioxide through the nose.Your skin removes salts and excess water from the body in the form of sweat.Your kidneys, lungs and skin form your excretory system.THE NERVOUS SYSTEMYou think, learn, remember and do many other things. You see, hear, smell, taste and feel. What helps you do all these?It is your brain. In fact, the brain controls all the functions of the body. The brain receives information from the various parts of the body and sends messages to them through nerves. Nerves are like wires. Your brain and nerves together form the nervous system.excretory systemkidneysHow do the lungs remove waste?CheckpointYour brain is active even when you are asleep.Did you know?Arrow-Puffin-3_Semester-1 Science 257