Abdomen, Pelvis & Perineum
Female lower genital sphincter is formed by all except (AIIMS - Nov - 2010)
|A||Internal urethral sphincter|
|B||External urethral sphincter|
Internal urethral sphincter
Pg. 1095, 1281, 1284; Gray's Anatomy (40th Ed.)
• Lower genital tract contraction can be carried out by external urethral sphincter,pubo-vaginalis and bulbospongiosus.
• Females do not have the internal urethral sphincter.
• The External urethral sphincter surrounds the vagina also and works as Urethro-vaginal sphincter.