Simple cuboidal epithelium

Simple cuboidal eplithelia are epithelial cells with a cuboidal shape arranged in a single layer. Simple cuboidal epithelia is found on the surface of ovaries, the lining of nephrons, the walls of the renal tubules, and parts of the eye and thyroid.

On these surfaces, the cells perform secretion and absorption.

Function
It provides protection due to its boxy appearance and may be active (pumping material in or out the lumen) or passive, depending on the location and cellular specialization.