part_of part of part of has_part has part has part anatomical entity Homo sapiens Homo sapiens urethra anatomical cluster renal system urinary bladder lower urinary tract SCTID:181420004 uberon Subdivision of urinary system which consists of the urinary bladder and the urethra. galen:LowerUrinaryTract FMA:45659 MA:0002636 UBERON:0001556 organ system subdivision