As you know how the hemoglobin
picks up the oxygen. Now in the tiny
capillaries of the body tissues, oxygen is freed from the hemoglobin and this
oxygen moves into the cells. Carbon
dioxide which is thus produced during the process of diffusion moves out of
these cells into the capillaries where most of it is dissolved in the plasma of
the blood and the blood that is rich in carbon dioxide then returns to the
heart via the veins. From the heart, the
blood is pumped to the lungs where carbon dioxide passes into the alveoli to be
exhaled.
Many factors – including genetics,
pollutants and irritants, and infectious disease – can affect the health of your
lungs and respiratory system and cause respiratory problems. Problems of the respiratory system that can
affect people include:
Common
cold. Colds
are caused by over 200 different viruses that cause inflammation in the upper
respiratory tract. One of the most common respiratory infections that are easy
to infect a human body is the common cold. Symptoms of common cold may include
a mild fever, cough, headache, runny nose, sneezing, and sore throat among
other symptoms.
Cough. A
cough is a symptom of an illness, not an illness itself, an advice information
to human being that something is wrong. There are many different types of cough
and many different causes to it, ranging from not-so-serious to life
threatening. Some of the more common causes affecting kids and teens are the
common cold, asthma, sinusitis, seasonal allergies, and pneumonia.
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