The Respiratory System of The Human Body

The Respiratory System

Respiration is not simply the name of gaseous exchange; it encompasses a lot more, like transport of oxygen through blood, energy production by ETC (Electron Transport Chain) mechanism, and so on. It consists of the whole cycle of the intake, transfer, utilization and release or exhalation of respiratory gases

Owing to rising levels of global air pollution, a number of severe respiratory diseases have evolved. To cope with such fatal maladies, you need to have a comprehensive understanding of the subject. For this purpose, a detailed description of parts, functions, diseases and other related topics on “What is human respiratory system?” is given in the respective sections.

Different parts, like lungs, respiratory tract, pulmonary blood circulation and accessory organs of respiratory system work with coordination to carry out a number of functions like, gaseous exchange, metabolism, cooling effect and vocalization. The mechanism of its execution is involuntary with perfect check and balance on any of the processes to be undertaken. Respiration works at external as well as internal level and, at cellular stage, is further divided into aerobic and anaerobic types.


Major organs of this system are grouped into two broad categories which are respiratory tract and lungs. However, it cannot perform its functions without the assistance of pulmonary blood circulation and oxygen binding protein, hemoglobin.

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You can survive without food and even water for many hours but life becomes impossible when you are unable to breathe even for a few minutes! Primary function of respiratory mechanism is to supply each body cell with desired amount of oxygen to carry out metabolism of food items which mainly consist of carbohydrates, fats and proteins.

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Dozens of diseases of human respiratory system have been afflicting mankind throughout the globe which are caused mainly by microbes, like bacteria, viruses, and other disease causing agents. Many of such disorders have either very low recovery rate or no treatment at all and can be best avoided by adopting preventive measures.

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