The Veterinary Microscopic Anatomy Review series is a 21-volume set of interactive eBooks to allow a Q&A type review of microscopic anatomy structure and function. The histological sections are taken from multiple domestic species, including the canine, feline, bovine and equine.

In this unit of the series, epithelia lining the outer surfaces (skin) and inner surfaces (lumina of organs, vessels and surfaces of body cavities) of domestic animals are examined. How epithelia differ depending on the function that is required of it will be observed. Also covered in the unit are exocrine glands with the consideration of their classification by method or mode of secretion and by their type of secretion.