Epithelium of "Trigone of bladder" is derived from: (A) Vesicourethral Canal, (B) Mesoderm, (C) Splanchnopleuric Mesoderm, (D) Urachus
Answer is B. The urinary bladder is derived from the cranial pa of the vesicourethral canal (endoderm).The epithelium of the trigone is derived from absorbed mesonephric ducts (mesoderm)Reference: Inderbir Singh Embryology; 10th edition; Page no: 292