The Respiratory System
The Respiratory System is very essential for us to live; it makes it possible for us to breath. The respiratory system is cluster of organs and tissues and the most important parts are the lungs, blood vessels, and muscles. The respiratory structure has two sections and it is divided the upper and lower respiratory tract. The upper tract consists of the nostril, nasal cavity, pharynx, epiglottis and the larynx. The lower tract consists of the trachea, bronchi, bronchioles and the lungs.
The primary purpose is to supply the blood with oxygen so it delivers the oxygen to the whole body. Now this is done during breathing, as soon as we breathe in oxygen and blow out carbon dioxide, this helps in the exchange of gases to oxygenate our blood. Respiration is done all through the nose, mouth, lungs, trachea, and the diaphragm.
Oxygen enters through the nose and mouth and the goes through the larynx and trachea which is split into two smaller tubes called bronchi, each bronchus is separated forming bronchial tubes and lead straight to the lungs where they are separated into smaller tubes and connects to little sacs called alveoli. Then oxygen passes thru the alveoli and then spreads throughout the capillaries into the main blood stream. In the meantime, the blood from the veins releases its carbon dioxide into the alveoli. The carbon dioxide follows the identical path out of the lungs when you breathe out (The Respiratory System, 2010).
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Buck Carol. J; (2009) Step by Step Coding
Body Systems, Retrieved (2012) from,
The Franklin Institute (1996-2012); The Human Heart, Retrieved (2012) from,
The Respiratory System, (2010). Retrieved from