Functions of the Skin

Functions of the Skin - Functions of the Skin A major(but...

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Functions of the Skin A major (but not only) function of the skin is protection. The skin protects our bodies from abrasion, invasion by bacteria, viruses and fungi, water loss, and UV radiation. Some UV radiation is good for us because epidermal keratinocytes produce vitamin D when exposed to UV light. Vitamin D is a necessary vitamin because it aids in the absorption of Ca 2+ . Sensation is another major function of the skin. In the deeper layers of the epidermis and the dermis, special cells receive information about temperature , touch, pressure, vibration and pain. This information is sent to the brain for processing. The skin is important in thermoregulation. The thermoreceptors that sense the temperature send the information to the hypothalamus which, if necessary, responds with sweating or shivering and vasodilation or vasoconstriction of cutaneous arteries. Lastly, the skin is an important communication organ. Axillary and pubic hair indicate reproductive maturity, healthy skin and hair indicates general health (and sometimes wealth), and certainly the face is the most communicative structure of our body.
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Functions of the Skin - Functions of the Skin A major(but...

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