How
Your Skin Works
Beautiful skin is a sign
of good health. Your skin performs some of the most important functions in
keeping you looking healthy and younger. Can you imagine how we would look
if we do not have skin covering us up? That may be too gross for our
imagination.
The skin is the largest
vital organ of the human body. It covers you up, keeps you warm and keeps
you cool. It also decides what can be absorbed and what should be rejected.
Skin that is clogged and
unhealthy is not just a beauty problem. It can become a hindrance to your
sense of vitality and wellness. Proper care of your skin is important not
only to your personal sense of beauty but also to proper elimination, more
graceful aging and overall health.
The
five main functions your skin performs to keeping your healthy.
1. It acts as a
mechanical barrier to infections. It ultimately prevents
microorganisms and other substances from entering the body.
Langerhans cells (a
type of macrophage) are found within the dermis, they engulf invaders
foreign to the body and debris.
Keratin
layers in the epidermis together with sebum produced by sebaceous glands act
as a waterproof barrier.
Melanocytes protect
the body from ultraviolet light.
Finger and toe nails
protect the extremities of fingers and toes from damage. Fingertips are
important for dexterity and the sense of touch; they have ridged areas to
assist in picking things up.
Hair follicles offer
some extra protection to certain parts of the body such as eyes and head.
2. It regulates
body temperature. Considerable heat is lost through the skin. Even under
extreme conditions of high temperature and exercise, our skin tends to make
body temperature normal. The production (evaporation) of sweat in
the skin cools us down when exposed to too much heat.
The core body
temperature needs to be kept constant for normal physiological activity to
take place (370c). It needs to maintain a core temperature for homeostasis.
3. Skin excretes
waste product and excess salt from the body.
Sweat includes waste
products in solution. Water is lost continuously through the skin as
insensible sweating. More pronounced water loss through sweating occurs as
part of temperature regulation.
4. Skin provides the
sense of touch or sensation we need to know more about our outside
environment through recognizing heat, cold, pain and other sensations.
Nerve endings of the skin
provide the body with
a great deal of information about the outside environment.
5. Skin
synthesizes the use of Vitamin D in the presence of sunlight and ultra
violet radiation needed for the absorption of calcium and phosphate.
So take care of your skin. No other organ in our body would do those for
you.
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