The Nail Unit

Key concept

The dorsal ridge of the nail is the first structure in the epidermis to keratinize.

The nail-forming matrix epithelium arises from a wedge-shaped invasion of epidermis into what will become the proximal nail fold.

The fetal nail is formed in layers like the interfollicular epidermis.

Bullet Summary

To study nail formation over time click on one of the buttons below:

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