Development of the urinary bladder is from?
Ans. is 'a' i.e., Urogenital SinusThe urinary bladder (except trigone) is derived from vesicourethral canal, cranial pa of urogenital sinus (endodermal).Trigone is derived from absorbed pa of Wolffian duct/mesonephric duct (mesodermal).
Urogenital Sinus
Paramesonephric Duct
Metanephric Blastema
Proctodaeum