http://general-terms.thesaurus.ekt.gr/vocabhttp://general-terms.thesaurus.ekt.gr/vocab?tema=11285urinary system http://general-terms.thesaurus.ekt.gr/vocab?tema=11285 excretion system BT http://general-terms.thesaurus.ekt.gr/vocab?tema=11285 urine RT http://general-terms.thesaurus.ekt.gr/vocab?tema=11285 physiology RT http://general-terms.thesaurus.ekt.gr/vocab?tema=11285 bladder (urinary) NT http://general-terms.thesaurus.ekt.gr/vocab?tema=11285 kidneys NT http://general-terms.thesaurus.ekt.gr/vocab?tema=11285 ureter NT