10 Lung Function
The lungs are one of the most important organs in animals, especially humans. Humans need to breathe at all times. If people do not breathe in a long time, then the man would pass out or die. Lung has many vital functions that are needed by the body. Here are the different kinds of lung function. Immediately, we see the first:
Respiration. Humans breathe the air because they require oxygen. Oxygen is needed to help overhaul of food in the body. Thus, the lungs of course is part of the respiratory system in humans.
Excretion. When humans exhale, humans emit carbon dioxide gas and water vapor. So, the lung is part of the excretory system in humans.
Controlling blood pH by changing the pressure of carbon dioxide.
Filter the blood clots that form in the veins.
Affect the concentration of some biological substances and drugs used in the treatment of blood.
convert angiotensin I to angiotensin II by angiotensin-converting enzyme.
Can serve as a protective layer of shock liver.
Provide airflow to create vocal sounds.
Lung function as a reservoir of blood in the body. Pulmonary blood volume is on average about 450 milliliters, about 9 percent of the total blood volume of the entire circulatory system. This quantity can easily fluctuate between half and two times the normal volume. Loss of blood from the systemic circulation by bleeding can be partly compensated by the blood from the lungs into the systemic vessels
Ciliary escalator action is an important defense system against air-borne infection. Dust particles and bacteria in the air that is inhaled trapped in the mucus layer present on the mucosal surface of the respiratory tract and goes up to the top of the pharynx by the rhythmic beating of cilia.
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