Development of the urinary bladder is from?: (A) Urogenital Sinus, (B) Paramesonephric Duct, (C) Metanephric Blastema, (D) Proctodaeum
Answer is A. 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).