<prompt> Most affernt fibers from the lateral geniculate nucleus terminate in the primary visual coex is:Layer 1Layer 2 and 3Layer 4Layer 5 and 6  <response>: Most fibers from the lateral geniculate nucleus LGN end in layer 4 of the primary visual coex. Ref: Ganongs Review of Medical Physiology, 22nd Edition, Page 161; Berne and Levy Physiology, 5th Edition, Page 129. 