Final answer:
The apex of the nail is usually pointed and located in the center. The nail root is the portion of the nail that is under the surface of the skin where the nail begins.
Step-by-step explanation:
The apex of the nail is usually pointed and is located in the center of the nail. A nail has three main parts: the root, plate, and free margin. The nail root is the portion of the nail found under the surface of the skin at the near end of the nail, where the nail begins.