What is the function of the nail body?

The nail body serves primarily to protect the fingertip, making it essential in providing a barrier against physical trauma and environmental harm. The hard surface of the nail body, made of keratin, acts as a shield for the sensitive distal phalanx, which is the bone located at the tip of the finger. This protection is crucial as the fingertips are often exposed to various external elements and potential injuries from daily activities.

While maintaining moisture is important for nail health, this function is not specifically attributed to the nail body itself. The nail matrix and surrounding skin contribute more directly to moisture retention. The connection of skin to bone is also not the role of the nail body; rather, it is facilitated by the underlying tissues and structures. Providing elasticity is not a primary function of the nail body, which is primarily designed to be rigid and protective. Thus, the protective role of the nail body is its central function, making it a vital component in overall finger health and hygiene.