Digestive System: anus, rectum, large intestine, small intestine, liver, pancreas, stomach, esophagus, saliva, Excretory System: urethra, ureters, bladder, kidneys, It is responsible for filtering our blood and separating waste , you can hold 500 ml, also called Urinary System, Circulatory System: blood flow, 5 litres, veins, capillaries, arteries, Aorta, transports nutrients and oxygen to the cells, brings waste and carbon dioxide from the cells, takes one minute to flow around our body back to the heart, heart, 4 chambers, Respiratory System: voice box, upper lobe, lungs, bronchial tree, bronchi, alveoli, Adam's apple, trachea, nose, interchange of oxygen and carbon dioxide,

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