Which epithelium is multi-layered with no basement membrane and provides protection to delicate parts?

• A. Ciliated epithelium
• B. Compound epithelium
• C. Simple cuboidal epithelium
• D. Columnar epithelium

Answer: (B)

Compound epithelium, being stratified, is built from several cell layers. This multi-layered arrangement creates a durable barrier whose deeper cells continue to divide and replace the surface cells as they wear away. The outer layers are often flattened and tightly packed, giving protection to delicate tissues beneath from abrasion, friction, and irritation. That protective, wear-resistant role is what makes this type ideal for lining areas that undergo lots of mechanical stress, such as mucous membranes in the mouth or throat. In contrast, epithelium that is only a single layer—whether cuboidal or columnar—or a ciliated one typically serves functions like absorption, secretion, or movement of substances rather than providing heavy protection.