The skin is an organ wich is a flexible membrane covering the entire surface of the body.  It provides protection and is in contact with the external environment.  It resists mechanical, thermal and chemical aggression to a certain extent and has a broad variety of functions, such as thermoregulation, sensation, elimination of waste, absorption and synthesis of vitamin D.

The skin is composed of three main layers:

Epidermis (read more...)
Dermis (read more...)
Subcutaneous tissue (hypodermis) (read more...)