The lunula is the visible part of which structure?

The lunula is the visible part of the matrix, which is located at the base of the nail and is the area where new nail growth begins. It appears as a faint, white, crescent-shaped area and represents the underlying tissue that produces the cells that become the nail plate. Understanding this relationship is crucial in nail care, as it helps in assessing nail health and growth conditions. The other structures, such as the nail bed and cuticle, do not produce nail cells, while the nail plate itself is made up of hardened keratin, which is a product of the cells produced by the matrix.