ever tried to hold your breath for any length of time, you
know how important the lungs are in the overall functioning
of the human body.
job of the lungs is to take oxygen from the atmosphere and
put it in the bloodstream, while simultaneously taking carbon
dioxide out of the blood stream and ejecting it in to the
How the lungs work
The lungs perform this vital role by contracting and expanding,
a job performed by the diaphragm muscle.
in turn, receives signals from the brain telling it when to
speed up (while you are running or exercising) or when to
slow down (while you are at rest or sleeping).
diaphragm contracts, the lungs are pulled downwards, and their
capacity is increased, which pulls air in. The diaphragm then
relaxes, and whatever oxygen was not absorbed by the body,
along with the carbon dioxide being ejected by the body, is
allowed to leave the lungs.
to providing the body with oxygen-rich blood, lungs are partially
responsible for acting as a protective cushion for the heart
which they almost completely surround. Meanwhile, surrounding
the lungs, lymph nodes also help the body filter out germs
your lungs healthy is a relatively easy thing to do.
don't smoke, don't start! And if you do smoke there are various
programs that may help you kick the habit.
Another sure way to keep lungs healthy and happy is to avoid
pollution wherever possible. Obvious things like staying
away from heavily polluted city centers are important, but
air pollution can often be found in the home, as well.
appliances such as air conditioners can contribute to indoor
air pollution, and overly moist environments are havens for
household bacteria. Especially during the winter, arm yourself
cold or flu
by simply opening a window to provide fresh supplies
of oxygen to help your lungs fight off cold weather bugs.
Illustrations and information detailing how humans breath
with related Flash presentation, with guides to keeping lungs
healthy and warning signs of disease, from the American Lung
in the Air - The Lungs - Photos in cross-section and
information on how air enters and leaves the body, charts
explaining how air's chemical composition changes as it is
inhaled and exhaled, with related chapters on the breathing
systems of plants and animals.