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Excretory 7
Excretory System 7th Grade Science
Question | Answer |
---|---|
Why does your body need food? | Food = Fuel |
excretory system | the system in the body that collects wastes produced by cells and removes them from the body in order to maintain homeostasis |
lungs | organ of the excretory system AND respiratory system, excretes waste products such as carbon dioxide and water |
skin | excretory organ that rids the body of waste through sweat glands |
liver | excretory organ that excretes bile pigments that result from the destruction of hemoglobin. It also converts nitrogenous waste from the breakdown of proteins into urea |
kidneys | major organs of excretory system, contains nephrons that filter blood removing waste and returning fluid to the body |
ureters | tubes through which urine travels from kidneys to bladder |
bladder | hollow muscular organ that stores urine |
urethra | tube through which urine travels from bladder to outside the body |