What are the small folds of skin that overlap the sides of the nail called?

• A. Nail folds
• B. Nail matrix
• C. Lunula
• D. Nail plate

Answer: (A)

The small folds of skin that overlap the sides of the nail are referred to as nail folds. These structures serve an important role in protecting the nail matrix and the underlying tissues from potential injury and infection. The nail folds consist of both the proximal nail fold, which is located at the base of the nail, and the lateral nail folds on either side of the nail. Together, they form a barrier that helps to keep the nail bed healthy by preventing foreign substances from entering.

In contrast, the nail matrix is the tissue under the base of the nail that generates the nail plate. The lunula is the visible part of the matrix that appears as a white crescent shape at the base of the nail. The nail plate is the hard, keratinized portion of the nail that we commonly see. Understanding the anatomy of the nail and its surrounding structures is essential for recognizing their functions and importance in nail health.