Which structure located at the medial canthus contains sebaceous glands and sometimes fine hairs?

• A. canthus
• B. caruncle
• C. plica semilunaris
• D. conjunctival fornix

Answer: (B)

The medial inner corner of the eye contains a small fleshy structure that houses sebaceous glands and can have fine hairs. This structure, the caruncle, sits at the inner corner and includes skin with hair follicles and sebaceous (oil) glands, sometimes accompanied by sweat glands. The other nearby features—an angled junction, a tiny conjunctival fold, or the conjunctival recess—do not typically contain sebaceous glands or hair. So the caruncle best fits the description of having sebaceous glands and sometimes fine hairs.