Eponychium

Definition

The eponychium is a small band of epidermis located at the base of the fingernails and toenails. It functions as a protective barrier, preventing pathogens from entering the nail matrix.

Related terms

Cuticle: The thin layer of dead skin that rides on the surface of the nail, often mistaken as part of the eponychium.

Nail matrix: The tissue under the nail that produces cells that become the nail plate.

Keratin:

A type of protein found in nails, hair, and skin that provides strength and resilience