Skin

Skin is one of the most significant organs in humans based on its size (approx. 2m²) and weight (approx. 4 to 5kg). Covering the entire body, it is also known as "integument" ("covering") and is supple and durable. Skin is made up of two layers, the epidermis and the dermis, and acts as a physical, chemical and biological barrier that protects us from the external environment. It also helps to regulate body temperature and the excretion of water and salt in the form of sweat. In addition, when the sun shines on our skin, it triggers the production of a substance necessary for the absorption of calcium, a function that reinforces the importance of this organ. In terms of its sensory role, the skin plays an important part in perception thanks to the numerous receptors that it contains, which are connected to the nervous system. These receptors make us aware of pressure, caresses (contact with a person, clothes, wind), temperature, pain and irritation.

Considered to be “the mirror of the soul”, skin appears to reflect our interior state. The expression “comfortable in your own skin”, for example, is used when we feel that there is harmony between our mind and our body and we experience a sense of fulfilment.