Which of the following are one of the five membranes of the cornea?

The correct answer identifies the endothelium as one of the five membranes of the cornea. The cornea has five distinct layers, which are crucial for maintaining its clarity and overall function. The endothelium is the innermost layer of the cornea; it's a single layer of cells that plays a vital role in regulating fluid balance, maintaining corneal transparency, and providing nutrients to the avascular corneal stroma. The endothelium helps prevent excess fluid buildup in the cornea, which is essential for its transparency.

While the stroma, limbus, and Bowman's Layer are important components of the cornea, they do not fall under the classification of 'membranes.' The stroma is the thickest layer of the cornea, providing structural support. Bowman's Layer, located between the epithelium and stroma, serves as a protective barrier. The limbus is the border area between the cornea and the sclera, not considered a membrane of the cornea itself. Understanding these distinctions is vital in delving deeper into corneal anatomy.