Final answer:
The nail body is also known as the nail plate, which is the visible hard part of the nail composed of dead keratinocytes and formed at the nail root.
Step-by-step explanation:
The nail body is also known as the nail plate. It is the hard, visible part of the nail that is made up of densely packed dead keratinocytes. The nail bed is the layer of skin beneath the nail plate that nourishes and supports it. The nail body protects the distal phalanges, and the fingertips, and assists in picking up small objects. It forms at the nail root, which contains the nail matrix, a collection of proliferating cells responsible for nail growth. This matrix governs nail generation, its rapid cellular turnover contributing to the nail's ongoing renewal.