The skin has many purposes.
protects the body from injury and infection
helps to regulate body temperature
helps to control fluid loss
gets rid of waste substances through the sweat glands.
The skin is divided into two main layers: the outer layer known as the epidermis and a layer underneath called the dermis. Below these is a deeper layer of fatty tissue.
The epidermis contains three types of cells. Most of the epidermis is filled with cells known as squamous cells. At the base of the squamous cells are rounder cells called basal cells. In between the basal cells are other cells called melanocytes. Melanocytes produce the pigment melanin. It’s this pigment that gives skin its colour.