How The Skin
Works
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
skin has five main functions.
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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