Simple columnar epithelium

Definition

Simple columnar epithelium is a type of epithelial tissue made up of a single layer of column-shaped cells, which are taller than they are wide and are specialized for absorption and secretion. These cells often have microvilli or cilia on their apical surface to increase their functional capacity.

Related terms

Microvilli:

Tiny, finger-like projections on the apical surface of some epithelial cells that increase the cell’s surface area for absorption.

Cilia:

Hair-like structures on the surface of some epithelial cells that can move in unison to transport materials across the cellular surface.

Absorption:

The process by which cells take in nutrients or other substances from their surrounding environment.