Eponychium

Eponychium is a term in anatomy that refers to the small band of epithelium that extends from the posterior nail wall onto the base of the nail. Also known as the cuticle, the eponychium is the end of the proximal fold that reaches out to the base of the nail.

Structure

The eponychium is a part of the nail structure and plays a crucial role in protecting the area where the nail grows from. It is made up of hard keratin and is a type of epithelium, a layer of cells that line the surfaces of the body.

Function

The primary function of the eponychium is to protect the nail matrix, or the part of the nail bed that is responsible for producing new cells that become the nail plate. It acts as a barrier to prevent bacteria and other harmful substances from entering the nail matrix.

Clinical significance

In some cases, the eponychium can become inflamed or infected, a condition known as paronychia. This can occur as a result of injury, irritation, or nail diseases. Treatment typically involves antibiotics and in severe cases, surgical intervention may be necessary.

See also

• Nail
• Paronychia
• Epithelium
• Keratin

References

Eponychium Resources
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