When empty, the bladder has a tetrahedral shape with a base, a neck, an apex, a superior surface, and two inferolateral surfaces; the dome of the bladder points upward. As the bladder fills it forms a ovoid/spherical shape and can expand into the abdomen.
The inner surface in the non distended state contains raised ridges that are heterogeneously oriented; the outer surface is smooth.
When the bladder is moderately full it contains about 0.5 liter and assumes an oval form; the long diameter of the oval measures about 12 cm.
|70363c09 urinary bladder normal enlarged abdominal pain induration abnormal urinary reterention CTscan sagittal reformat Davidoff MD|
|74911c01 distal ureter uretero vesical junction UVJ normal ureters ureteric jets bladder anatomy CTscan Courtesy Ahley Davidoff MD|