Colorado Cosmetology Written Practice Exam

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Which term describes the overlapping skin surrounding the nail?

Eponychium
Nail grooves
Perionychium
Lunula

The correct answer is: Perionychium

The perionychium refers to the skin that overlies the sides and base of the nail, while the eponychium refers to the skin fold on top of the nail at the base. While the nail grooves (or nail sulci) are present in the skin surrounding the nail, they do not specifically refer to the overlapping skin. The lunula is the white, half-moon shape visible at the base of the nail, but it is not technically overlapping skin. Therefore, the correct term for the overlapping skin surrounding the nail is the perionychium.