The skin: largest organ of the body

Abstract

This article concludes this series in the anatomy and physiology of the body systems. An overview of the skin is provided and the various and functions of this, the largest organ of the body, are described. The three layers of the skin are discussed, along with an overview of skin pigmentation. The skin would be unable to complete most of its functions without the help of its appendages. The subcutaneous glands, hair, nails and nerve endings (the appendages) that allow it to function efficiently are summarised briefly. One other function of the skin—vitamin D synthesis—is described. The article ends with a glossary of terms and a set of questions that are intended to assist with leaning.