Jump to ContentJump to Main Navigation
The Evolution of Organ Systems$
Users without a subscription are not able to see the full content.

Andreas Schmidt-Rhaesa

Print publication date: 2007

Print ISBN-13: 9780198566687

Published to Oxford Scholarship Online: September 2007

DOI: 10.1093/acprof:oso/9780198566687.001.0001

Show Summary Details
Page of

PRINTED FROM OXFORD SCHOLARSHIP ONLINE (oxford.universitypressscholarship.com). (c) Copyright Oxford University Press, 2021. All Rights Reserved. An individual user may print out a PDF of a single chapter of a monograph in OSO for personal use. date: 20 January 2021



(p.54) CHAPTER 4 Epidermis
The Evolution of Organ Systems

A. Schmidt-Rhaesa

Oxford University Press

The epidermis is the external surface of an animal and performs several functions. It is usually a monolayer of cells, but can also be composed of several layers of cells. Epidermal cells are connected by cellular junctions (anchoring, occluding, and gap junctions), which are of particular phylogenetic importance. Epidermal cells can secrete extracellular material to their basal and apical side, which is called the ECM or glycocalyx/cuticle. The evolution of such structures is discussed in this chapter, including the presence of chitin and the moulting of the entire cuticle. Particular substructures of epidermal cells are the cilia, which form a variety of different arrangements and shapes. Several characters concerning the epidermis can be recognized as evolutionary novelties for particular metazoan taxa.

Keywords:   cuticle, glycocalyx, cell-cell-junction, moulting, chitin, cilia, monociliarity, syncytial epidermis

Oxford Scholarship Online requires a subscription or purchase to access the full text of books within the service. Public users can however freely search the site and view the abstracts and keywords for each book and chapter.

Please, subscribe or login to access full text content.

If you think you should have access to this title, please contact your librarian.

To troubleshoot, please check our FAQs , and if you can't find the answer there, please contact us .