Respiratory system

Respiratory system

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Respiratory system: gas exchange


The respiratory system's main function is to carry out the gas exchange, that is, to bring oxygen (O2) to the cells and eliminate the carbon dioxide (CO2) produced by them.

Characteristics and functioning of the respiratory system

Most cells in our body use O2 to perform their metabolic functions, this process results in the release of CO2. Excess carbon dioxide has toxic effect on our body, so it must be eliminated. This is done quickly and efficiently by the respiratory system.

This way, the respiratory system helps to control the pH of the blood, ie its acidity. He is also responsible for our sense of smell, for filtering the air we breathe in, for heating and moistening the breath, for the removal of water and heat from the body and also for the production of sounds.


This system, so important and vital to our body, consists of the following organs: nose (responsible for capturing, filtering and moistening the inhaled air), pharynx (the air follows it through the nose), larynx (retains dust particles). filtering through the nose), trachea (carries oxygen to the bronchi), bronchi (two short ducts that enter the lungs and into them, split several times until they become microscopic, when they will be called bronchioles), and finally , the pulmonary alveoli (where gas exchange occurs).

Breathing problems

Breathing problems and poor breaths bring little oxygen to the cells and thus increase the amount of free radicals within them, which causes an acceleration in cell aging and even the development of cancer. Already a well performed breathing brings numerous benefits, in addition to being able to slow aging process.