Final answer:
The art that protrudes from the nail is known as the free margin. It is the extendable part past the finger or toe's distal end that is also trimmed for grooming. The nail also consists of the root, plate, and matrix, essential for growth and structure.
Step-by-step explanation:
The art that protrudes from the nail is known as the free margin. This is the part of the nail that extends past the distal end of the finger or toe and is often the section that is trimmed or filed when personal grooming. The nail anatomy is complex, consisting of the root, plate, and the aforementioned free margin. The root is where the nail begins under the skin, while the nail plate is the hard, visible part of the nail. All of these parts work together to form the structure of the nail, with the nail matrix at the proximal end being responsible for nail growth due to its stem cells that divide to form keratinocytes.