Which structure forms the border at the base of the nail and protects the nail bed?

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Study for the History and Physical (Handamp;P) Exam 1. Prepare with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

Multiple Choice

Which structure forms the border at the base of the nail and protects the nail bed?

Explanation:
The border at the base of the nail is formed by the proximal nail fold. This skin fold encircles the base of the nail plate and partly covers the nail matrix, helping to shield the nail bed from trauma and infection as new nail cells are produced. The lunula is simply the visible part of the nail matrix and does not define the base border. The cuticle (eponychium) sits at the base as a protective seal over the nail plate, but it isn’t the border itself. The lateral nail folds run along the sides, not at the base.

The border at the base of the nail is formed by the proximal nail fold. This skin fold encircles the base of the nail plate and partly covers the nail matrix, helping to shield the nail bed from trauma and infection as new nail cells are produced. The lunula is simply the visible part of the nail matrix and does not define the base border. The cuticle (eponychium) sits at the base as a protective seal over the nail plate, but it isn’t the border itself. The lateral nail folds run along the sides, not at the base.

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