My blood flows down to my kidneys tonightTo be filtered, be urineKidneys are bean shaped organs, with tiny Nephrons filteringEach nephron surrounds capillaries- glomerulusThen narrows into a long coiled tubuleRef: dont let them in, dont let them seeOr else sphinc-ter muscles will controlUrination, it will not flowAnd know I knowChorus:Let it flow Let it flowbladder cant hold my urine no moreLet it flowLet it flowFluid wastes need to goUrinary System , Excretory SystemLet my pee rage onThe smell never bothered me anywayVerse 2The wastes and extra water, will combine to make urineThen it enters two small tubes, these are called the uretersIts time to see, where it will flowUreters then urinary bladderWhen it is full, its time to flowUrethraChorus:Let it flow Let it flowbladder cant hold my urine no moreLet it flowLet it flowFluid wastes need to goUrinary System , Excretory SystemLet my pee rage on(Instrumentals)Bridge:Drink plenty of water to keep you hydratedBut if you dont youll be dehydrated and that not goodEat healthy food and not junk foods and salty foodsIm drinking fluids, and it makes my bladder fullFinale:Let it flow Let it flowbladder cant hold my urine no moreLet it flowLet it flowFluid wastes need to goUrinary System , Excretory SystemLet my pee rage onThe smell never bothered me anyway