The skin is the largest organ of the body based on surface area, although the muscles and bones have more mass. One of its primary functions is as a barrier against desiccation and the hostilities of microbial invaders from the outside world. Chapter 24, In: Treuting PM, Dintzis SM, Montine KS, eds. Comparative Anatomy and Histology, 2nd ed. 2018:511-542
