Key features of simple columnar epithelium include:
Height: The cells are taller than they are wide, which helps in their primary functions. Nucleus position: The nuclei of these cells are typically elongated and located near the base of the cell. Specializations: In some locations, the cells may have microvilli or cilia. Microvilli increase the surface area for absorption, while cilia help in moving substances along the epithelial surface. Goblet cells: These are specialized cells found interspersed among the columnar cells, responsible for secreting mucus. The mucus acts as a lubricant and a protective barrier.