You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Epithelium of "Trigone of bladder" is derived from and explain in detail?
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