title: Pressure and flow rate as related to lumen caliber and entrance configuration.
mesh_terms: D055592:Biophysical Phenomena; D001703:Biophysics; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D008954:Models, Biological; D011312:Pressure; D012212:Rheology; D014521:Urethra / Q000503:physiopathology*; D014525:Urethral Stricture / Q000503:physiopathology*; D001743:Urinary Bladder / Q000503:physiopathology*; D001748:Urinary Bladder Neck Obstruction / Q000503:physiopathology; D014554:Urination