11. What is the function of
keratin in the epidermis?

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The epidermisis the layer of the
made of epithelial . Inthe
epidermis there keratin-secreting
cells (keratinocytes). is an
insoluble that impregnates the
of the skin protection
and impermeability. mammals
keratin also the hairs.

The cells of the surface
form the layer. These cellsdie
are continuously replaced
others.