The Veterinary Microscopic Anatomy Review series is a 21-volume set of interactive iBooks 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, multiple tissues (epithelium, connective tissue, muscle, etc.) are now brought together into an organ system. Multiple sections of skin (including sections of the lip and eyelid from multiple species), the planum nasolabialis of the ox, the digital pad and anal canal of the dog, and the hoof of the horse are considered. The structure and function of the epidermis or epithelium, dermis or corium, hair follicles, sebaceous and sweat glands, tarsal glands, anal sacs and glands, portions of the hoof, and other associated structures are reviewed. Species variation hair follicle distribution is also considered.