Vaginal sphincter is formed by all except:: (A) Internal urethral sphincter, (B) External urethral sphincter, (C) Pubovaginalis, (D) Pubovaginalis
Answer is A. A i.e. Internal urethral sphincter The musculature surrounding the internal urethral orifice of female bladder is not organized into an internal sphincter. In other words females lack internal urethral sphincterQ