1) Secretion is the only role of kidneys a) Truth b) False 2) The bladder is a muscular tube that holds the urine a) Truth b) False 3) Renal system includes kidneys, ureter, bladder and urethra a) Truth b) False 4) One kidney is controlling electrolyte composition of the blood, while the other one is dissolving and eliminating waste products a) Truth b) False

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