URINARY BLADDER

• Urinary Bladder

  A) Lumen of bladder

  B) Transitional Epithelium

  C) Lamina Propia

  D) Muscular Layer

  E) Adventitia

  F) Transitional Epithelium

  G) Basement Membrane

  H) Lamina Propia

  
• Urinary Bladder

  A) Urinary Bladder

  B) Opening of Ureter

  C) Trigone

  D) Opening of urethra

  E) Transitional Epithelium

  
• Urinary Bladder

  ● inner mucosa ○ Transitional epithelial cell (barrier)
• Urinary Bladder

  ● Lamina propria

  ● Muscular coat / muscularis

  ○ smooth muscle

  ○ 3 layers
• Urinary Bladder

  ● internal sphincter muscle

  ○ control entry from ureters and exit at the urethra

  ○ circular smooth muscle fibers form internal urethral sphincter

  ○ lower is the external urethral sphincter with skeletal muscle for voluntary control
• Urinary Bladder

  ● retroperitoneal (serosa or adventitia)