Anatomy All true the trigone of the urinary bladder except A Mucosa is loosely associated to the underlying musculature B Mucosa is smooth C It is lined by transitional epithelium D It is derived from the absorbed pa of the mesonephric duct 💡 Explanation All true the trigone of the urinary bladder except ✓ Correct Answer: A. Mucosa is loosely associated to the underlying musculature