simple columnar epithelium simple columnar epithelium simple columnar epithelium is a single layer of columnar epithelial cells which are tall and slender with oval-shaped nuclei located in the basal region, attached to the basement membrane. in humans, simple columnar epithelium lines most organs of the digestive tract including the stomach, and intestines. simple columnar epithelium also lines the uterus. simple columnar epitheliumthe stomach wall, with simple columnar epithelium visible as a lining at the top.detailsidentifierslatinsimple columnar epitheliumthh2.00.02.0.02020 fma45567anatomical terminology this article is part of a series onepithelia squamous epithelial cell simple stratified columnar epithelial cell simple stratified pseudostratified cuboidal epithelial cell simple stratified specialised epithelia olfactory respiratory intestinal transitional vaginal germinal female male other table of epithelia of human organs structure