1. Urine contains water, urea and salts.
2. The role of the brain influences the function of the kidneys through ADH
4. After the urine goes down the collecting duct, it goes into the bladder.
5. Salts and H2o effects the composition of the tissue fluid.
6. The removal of the urea is done through the excretion of metabolic waste.
everything read up to here.
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