the organ which secrets fluids contain an acid and some enzymes, heart, kidney, mouth, Stomach, liver, small intestine, the organ which play an important rule in the filitration of blood inside your body  , kidneys, stmoch, anus, large intestine, lungs, heart, the system which helps the digestive system in transporting the nutrients to all different body organs , nervous, respiratory, circulatory , urinary, stomach, kidney, The tube which transports the urine from the kidney to the bladder, ureter, vein, urethra, artery, small intestine, large intestine , An organ in which absorption of nutrients starts, heart, stomach, large intestine , kidney, liver, small intestine .

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