Review: Anatomy of the Bladder

Here is what we have learned from Anatomy of the Bladder:

  • The empty bladder is about the size and shape of a pear and it is located in the lower pelvic cavity.
  • The bladder has flexible muscular walls three layers thick.
  • As urine fills the bladder, these walls expand; they contract to expel urine.
  • The three principal tissue layers of the bladder consists of:
    • mucosa
    • submucosa
    • muscularis
  • The three muscularis 'sublayers' are:
    • inner longitudinal smooth muscle
    • circular smooth muscle
    • outer longitudinal smooth muscle
  • Perivesical fat is a layer of fat surrounding the bladder outside of serosa/adventitia.