Which two membranes are found in the cornea?

Which two membranes are found in the cornea?

• A. Bruch's membrane and Descemet's membrane
• B. Bowman's membrane and Descemet's membrane
• C. Epithelium and Stroma
• D. Endothelium and Descemet's membrane

Answer: (B)

Two membranes form key interfaces in the cornea: Bowman's layer and Descemet's membrane. Bowman's layer is a tough, acellular sheet just under the corneal epithelium that helps give the cornea its shape and provides a barrier. Descemet's membrane is a basement-like membrane produced by the corneal endothelium and sits between the stroma and the endothelium, supplying structural support to the inner cornea. The other possibilities mix in a membrane from the retina (Bruch's membrane) or refer to layers that aren’t membranes (epithelium, stroma) or to the endothelium, which is a cellular layer rather than a membrane. Therefore, the two membranes found in the cornea are Bowman's layer and Descemet's membrane.

Two membranes form key interfaces in the cornea: Bowman's layer and Descemet's membrane. Bowman's layer is a tough, acellular sheet just under the corneal epithelium that helps give the cornea its shape and provides a barrier. Descemet's membrane is a basement-like membrane produced by the corneal endothelium and sits between the stroma and the endothelium, supplying structural support to the inner cornea. The other possibilities mix in a membrane from the retina (Bruch's membrane) or refer to layers that aren’t membranes (epithelium, stroma) or to the endothelium, which is a cellular layer rather than a membrane. Therefore, the two membranes found in the cornea are Bowman's layer and Descemet's membrane.