Epithelia page 19

Contents

Yves Clermont, Michael Lalli, Zsuzsanna Bencsath-Makkai
LIGHT-MICROSCOPIC HISTOLOGY ATLAS

1. Epithelia

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

1.19 Stratified squamous and keratinized epithelium of a thick skin

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Stratified squamous and keratinized epithelium of the thick skin from the palm of a monkey's paw.

The cells at the base are small and oriented vertically (arrowhead). The cells above are polyhedral. Several cells of these layers show brown melanin pigment granules next to their nucleus (arrows).

The epithelial cells of the next layers become squamous and progressively accumulate basophilic keratohyalin granules (*).

The more superficial cells suddenly keratinize (K) and lose their basophilic staining. These cells also lose their nucleus. The flattened residues of keratinized cells eventually desquamate.

Stain: H–E
Magnification: ×700

The text and images of this Histology Atlas, by Yves Clermont, Michael Lalli & Zsuzsanna Bencsath-Makkai, are licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 2.5 Canada Licence and cannot be modified without the written permission of the authors. Use of any text or images must carry an acknowledgement which includes a link to the original work.