urinary bladder defined in 1951 yearurinary bladder - urinary bladder;
urinary bladder - Sac storing urine; an expansion of the kidney duct in, e.g. Crustacea, teleosts. In tetrapods, a ventral diverti-culum of hind end of gut (cloaca) which in embryo of amniotes leads into allantois. Absent in adult birds and most reptiles.
near urinary bladder in Knolik
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