Which part of the nail protects the underlying tissues?

The nail plate is the hard, visible part of the nail that serves as a protective barrier for the underlying tissues, including the nail bed and the surrounding skin. It is composed of layers of keratin, a tough protein that provides strength and resilience. The primary function of the nail plate is to shield the delicate tissues beneath it from mechanical injuries and external environmental factors, such as bacteria and moisture. This protective quality helps to maintain the health of the underlying structures, supporting overall nail integrity and function.