This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anatomy
Vaginal fornix is related to which of the following: 
Select and explain. 
A. Morison's pouch, B. Pouch of Douglas, C. Intersigmoid recess, D. All of the above
B: Pouch of Douglas
Answer: B: Pouch of Douglas 
Explanation: Anteriorly, pouch of Douglas is bounded by the uterus and the posterior fornix of the vaginaFornices of vaginaThe fornices of the vagina are the deepest poions of the vagina, extending into the recesses created by the vaginal poion of cervix.There are three named fornices:- The posterior fornix is the larger recess, behind the cervix. It is close to the rectouterine pouch.- There are two smaller recesses in front and at the sides:The anterior fornix is close to the vesicouterine pouch.The lateral fornix.The fornices appear to be close to at least two erogenous zones, the AFE zone, which is near the anterior fornix, and the cul-de-sac, which is near the posterior fornix