Chapter 7: Integument

Keywords

Please familiarize yourself with these keywords before you start reading the chapter:

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Apocrine
Apocrine secretion involves exocytosis of membrane-bound secretory vesicles. This is the major secretion form of epitrichial glands (often referred to as just “apocrine glands”) and eccrine glands.
Desmosomes
Cell-to-cell adhesion complexes comprised of multiple proteins that tightly adhere cells (keratinocytes) of the epidermis. Desmosomes of the stratum spinosum are readily apparent on histology.
Holocrine
Holocrine secretion involves rupture of the secretory cell, thereby releasing the cytoplasmic contents. This is the major secretion form of sebaceous glands.
Keratin
A structural protein produced by keratinocytes that contributes significantly to the structural integrity of the epidermis.
Keratinocytes
A general term referring to epithelial cells of the epidermis, including those of the stratum basale, stratum spinosum, stratum granulosum, and stratum corneum.
Melanocytes
Cells derived from the neural crest that produce the pigment melanin.  Melanocytes reside within the basal layers of the epidermis, producing and then transferring melanin to keratinocytes.
Sebocytes
Secretory epithelial cells that contribute to the production of sebum, a lipid-rich fluid that coats hair and the epidermis.  Clusters of sebocytes comprise sebaceous glands.

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Keywords by Ryan Jennings and Christopher Premanandan is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License, except where otherwise noted.

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