Final answer:
The cuticle, also known as the eponychium, is an essential protective barrier for the nail and the underlying tissues. It is a fold of dead epithelial cells at the proximal end of the nail body, preventing infection. Cutting the cuticle should be avoided to maintain this protection.
Step-by-step explanation:
The normal cuticle is a layer of dead epithelial cells that forms around the nail, known as the eponychium. It is essential in sealing the edges of the nail plate to the nail fold which helps prevent infection by protecting the underlying tissues. This structure overlaps and covers the edge of the nail plate, which is the main keratinous part of the nail—one that we often refer to as the nail itself. The nail cuticle, also known as the eponychium, is a fold of epithelium that extends over the nail bed. Similarly, the nail fold extends over the sides of the nail body, helping to hold it in place. The nail body is formed on the nail bed, located at the tips of our fingers and toes, to protect these extremities as they experience the maximum mechanical stress. Its growth begins at the nail root, which has a matrix of proliferating cells that allow the nail to grow continuously. The tissue beneath the free edge of the nail farthest from the cuticle is known as the hyponychium. One should avoid cutting the cuticle during a manicure because it serves as a protective barrier against infections. The free margin is the portion of the nail that you trim. Understanding nail anatomy is critical for maintaining nail health.