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What is the correct term for the natural living skin at the base of the nail plate?

  1. Lunula

  2. Onychophagy

  3. Perionychium

  4. Eponychium

The correct answer is: Eponychium

The correct term for the natural living skin at the base of the nail plate is the eponychium. The eponychium is also known as the nail cuticle, which is why it is often referred to as the cuticle. Option A, lunula, refers to the small, pale half-moon shape at the base of the nail. Option B, onychophagy, is the medical term for nail-biting and has no relation to the skin at the base of the nail. Option C, perionychium, refers to the skin surrounding the nail, not the skin at the base of the nail.