Anatomy

1. Development of urinary bladder
DiNa Maklad
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2. During the 4th to the 7th weeks of development, divides into the urogenital
sinus anteriorly and the anal canal posteriorly by the urorectal septum

3. The bladder develops from the upper part of the urogenital sinus and is
connected with the allantois.

4. Urogenital septum

5. During differentiation of the cloaca, the caudal portions of the mesonephric
ducts are absorbed into the wall of the urinary bladder.
Consequently, the ureters, initially outgrowths from the mesonephric ducts,
enter the bladder separately.
Trigone develops .

7. Trigone

9. Malformations related to the development of
the bladder
Urachal fistulas
Urachal Sinuses
Urachal cysts

10. Malformations related to the development of
the bladder
Abnormal attachment of the ureters