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The Respiratory System

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by

Robert Williford

on 7 May 2014

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Transcript of The Respiratory System

The Respiratory System
Parts of the Respiratory System
Trachea -
this is commonly known as your windpipe and is the passageway, for air, to the lungs.
Bronchi -
the trachea splits into two tubes at the lungs called bronchi. Each bronchus enters the lung and branches out into thousands of tiny tubes called bronchioles.
Lungs -

Y
our body has two spongelike lungs. Inside the lungs each bronchiole branches to form thousands of
alveoli
. Capillaries surround each alveolus and this is where air gets transported to and from the blood.
How do you Breathe?
We have a muscle that is responsible for sucking in air or forcing out air called a diaphragm. It is a dome shaped muscle that presses against the lungs to exhale and pulls away from the lungs to inhale.
Respiratory Disorders
Asthma - irritants cause tissue around the bronchioles to constrict and secrete large amounts of mucus.

bronchitis - develops when bacteria irritate the lining of the bronchioles causing a bad cough.

pneumonia - caused when bacteria or viruses grow inside the bronchioles and alveoli causing them to become inflamed and filled with fluid. If the alveoli become too filled with fluid the person can suffocate.

emphysema - caused by smoking. Smoking is the leading cause of all respiratory disorders and leads to the lung tissue eroding away making it hard to breathe. It also causes cancer.
Breathing: Brought to You by Your Respiratory System
Respiration -
the entire process by which the body obtains and uses oxygen and gets rid of carbon dioxide and water.
Respiratory system -
consists of the lungs, throat, and passageways that lead to the lungs.
Parts of the Respiratory System
Nose -
this is the primary passageway for air to enter and exit the respiratory system. The mouth is also connected to this passage way and can function in the same manner.
Pharynx -
this is commonly known as the throat and its job is to direct food to the correct tube(esophagus), and air to the correct tube(larynx).
Larynx -
this is commonly known as the voice box. You can feel the ridges of this on your neck if you tilt you head up slightly. It contains two elastic bands that stretch across the surface and vibrate as air passes them making sound.
Once the air breathed in travels into the lungs throught the bronchiole tubes it is spread out to the different alveoli where it comes into contact with blood vessels. The oxygen then sticks to the red blood cells and is carried off to the rest of the body.
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