American Academy of Professional Coders (AAPC) Practice Exam

What is the function of the root in the nail structure?

1. Protect the nail

2. Produce most of the nail volume

3. Provide color to the nail

4. Connect the nail to the skin

The correct answer is: Produce most of the nail volume

The root of the nail plays a crucial role in the formation and growth of the nail. Specifically, it is located beneath the cuticle, at the base of the nail. This area contains rapidly dividing cells that contribute to the formation of the nail plate, thereby producing most of the nail's volume as it grows outwards from the root. As these cells divide and keratinize, they create the hardened structure of the nail that we see and is vital for protection and support. While the root does connect to the surrounding skin, its primary function is much more focused on nail production, making it the most significant part in terms of volume creation. Other options, such as protecting the nail, providing color, or connecting it to the skin, do not accurately capture the root's primary purpose in the nail structure.