Vaginal sphincter is formed by all except
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
Internal urethral sphincter
External urethral sphincter
Pubovaginalis
Bulbospongiosus
Abdomen and pelvis