Vaginal sphincter is formed by all except: (A) Internal urethral sphincter, (B) External urethral sphincter, (C) Pubovaginalis, (D) Bulbospongiosus
Answer is A. Lower genital tract contraction can be carried out by external urethral sphinter, pubo-vaginalis and bulbospongiosus. Females doesnot have internal urethral sphincter.It is anatomical bladder neck sphincter present in males. <img src=" /> Ref - BDC 6e vol2 pg379