Gerlach valve is present in -: (A) Gall bladder, (B) Nasolacrimal duct, (C) Pancreatic duct, (D) Vermiform appendix
Answer is D. Ans. is 'd' i.e., Vermiform appendix o Gerlach's valve (valvula processus vermiformis) is a fold of mucous membrane found at opening of vermiform appendix of some people.