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The lungs
· The lungs bring oxygen into our bodies and pass it into the
bloodstream so that it can circulate to every body cell. They are part
of the body system we use to breathe. This is called the respiratory
system.
· The parts of the respiratory system
· The windpipe divides into two airways, called the right main
bronchus and the left main bronchus. One goes to each lung. Within
the lungs, they divide into smaller tubes called the secondary
bronchi. There are two of these on the left side and three on the
right. Each secondary bronchus divides into smaller tubes called
bronchioles.
· The right lung is divided into 3 sections called the upper, middle and
lower lobes. The left lung is divided into 2 sections called the upper
and lower lobes.…read more

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The pleura
· The pleura are 2 fibrous sheets of tissue that
cover the lungs.
· Doctors usually call these the lining of the lungs,
although this can be confusing as they are on
the outside.
· The pleura are also called the pleural
membranes.
· The gap between the pleura is called the pleural
space. The pleura produce a lubricating fluid that
fills the gap. This helps the lungs to move
smoothly in the chest when they are inflating and
deflating as we breathe.…read more

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How the lungs work
· The lungs bring oxygen into our bodies and pass it into
the bloodstream so that it can circulate to every body
cell.
· We use the muscles of our chest and a large flat muscle
under the lungs (the diaphragm - pronounced di-a-fram)
to draw air into the lungs. The diaphragm is at the base
of the chest cavity, just above the stomach.
· The chest cavity is sealed so that when you breathe in
and the muscles make it bigger, this causes a vacuum
inside, which draws the air in through your nose and
down into the lungs.…read more

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How the lungs work
· At the end of the smallest airways in the lungs (the secondary
bronchii) are the smallest tubes, the bronchioles.
· These carry air throughout the lungs. At the end of the bronchioles
are air sacs called alveoli. There are millions of these tiny sacs. This
is where oxygen is absorbed into the bloodstream from the air that
we breathe in. Once in the blood, the oxygen can travel throughout
the body and reach every body cell.
· As oxygen is being absorbed, carbon dioxide passes back into the
alveoli from the bloodstream. This waste gas is removed from the
body as we breathe out.…read more

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Respiratory system
· When blood is not being pumped around the
system efficiently the burden placed on the lungs
increases.
· This can cause lung congestion, which in turn
may cause breathlessness.
· DIURETICS (water tablets) are often prescribed
to remove excess fluid from the body system.
· Lung conditions strain on heart heart failure…read more

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Comments

Sam Morran

An excellent resource - lots of detail and some good diagrams to help with clarity.

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