Which fold of GIT is NOT permanent:: (A) Ruga, (B) Plicae semilunaris, (C) Spiral Valve of Heister, (D) Transverse rectal
Answer is A. Ruga are the mucosal folds present in the stomach which disappear on distension, hence are not permanent. Plicae semilunaris/circulares are circular folds of mucous membrane and are permanent (not obliterated by distension).