Wound, Ostomy and Continence Nurses Society (WOCN) Practice Exam

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What is the eponychium?

  1. The layer of skin covering the nail root

  2. The area where the nail meets the skin

  3. The part of the nail that protects the fingertip

  4. The nail's free edge

The correct answer is: The layer of skin covering the nail root

The eponychium refers specifically to the layer of skin that covers the nail root, which is located at the base of the nail bed. This protective layer is sometimes mistakenly called the cuticle, but its anatomical designation is the eponychium. It plays an important role in protecting the underlying nail matrix, which is responsible for nail growth. The other options describe different components of nail anatomy. The area where the nail meets the skin pertains to the hyponychium and the perionychium, while the part of the nail that protects the fingertip generally refers to the nail plate itself. The free edge is simply the part of the nail that extends beyond the fingertip, and while it plays a protective role for the fingertips, it does not accurately define the eponychium. Understanding these distinctions is crucial for comprehensive knowledge in the field of wound, ostomy, and continence nursing.

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