Lungs

The lungs are one of six organs in the respiratory
system.
 The other five organs include: nasal cavity,
pharynx, larynx, trachea and bronchial tubes.

The lungs are essential respiration organ
that is located in all breathing mammals.
 The lungs transport oxygen from the
atmosphere into the bloodstream.
 Then, the lungs release carbon dioxide
from the bloodstream back into the
atmosphere.

Theoretically, there should be a right an
left lung in your chest.
 The left being smaller than the right lung
due to the fact that there is less space in
the pleural cavity because of the mass
of the heart.
 The left lung contains only 2 lobes and
the right has 3 lobes.


Each lung consist of bronchi, bronchioles
and alveoli.
Bronchi are pipes leading from the
trachea to each lung.
 Bronchioles are smaller and smaller
branches of bronchi.
 Alveoli are very little small sacs at the
ends of the smallest bronchioles where
oxygen gets into the blood and carbon
dioxide exits.

The lungs are spongy because they
contain air.
 The lungs are protected by membrane
called pleural.

Asthma: a disease the affects the lungs by
the constriction of the bronchial airways.
Can cause violent spasms of the bronchi.
Maybe caused by various allergens.
 Emphysema: a pulmonary condition that
characterized by destruction of the walls of
the alveoli resulting in fewer over expanded
air sacs. Can be caused by smoking and
sometimes the air you breathe.

Pneumonia: an inflammatory condition
of the lung that can be caused by
bacteria and viral infections, diseases,
and chemicals. Resulting in the alveoli
spaces filled with fluids.
 Tuberculosis (TB): an infectious disease
caused by bacteria. It affects the
respiratory system and causes
inflammation and calcification in the
lungs.


The lung on the left is a healthy lung and
the one the right is an unhealthy lung: