Cilveducation

Respiratory cells of the human body provides Oxygen Necessary for their activities, and finesse of carbon dioxide (the product of the oxidation process).
Inhale air passes through the trachea and shins (Haptih narrower) to the lungs. Each lung include much of bronchioles poetic ending a countless number of alveoli (or alveoli) very thin membranes lining being through gas exchange of capillaries that surround...

Oxygen is obtained By process of breathing by the respiratory tract, which consists of:
1- airways: And include a series of member movement of air into the lungs and these members are
2- Alhvrtan Alonfitan: Relate with the outside Mounchrin two Mbtnan mucous membrane fringed moisturizes and heated air and Purifies the air....

The breathing following functions:
1- providing the body with oxygen from the air to the lungs, then oxidation in the lungs, thanks to molecular oxygen pressure in the alveoli and blood vessels.
2- put carbon dioxide: thanks to molecular differential pressure him in the cells, veins and alveoli....

Are renewed air inside the lungs by mechanical phenomena, the first movement of respiratory muscles that work to change the size of the rib cage during inhalation and exhalation, and overcome resistance to the airways and pulmonary pleura.
Breathing process is divided into two consecutive phases successively and continuously both inhalation and exhalation:...