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Lungs
...  oxygen. Some of the most common health conditions that make it hard to breathe are: Asthma, Bronchitis, Emphysema, Apnea and Pneumothorax. The most common health conditions that minimize and prevent gas exchange are: Pulmonary Edema, carbon monoxide poisoning and smoke inhalation. The peak of your lung function is in the late teens and early twenties. In your late twenties, lung function can  ...

Alveoli
...  alveoli or the air sacs are the terminal parts of the respiratory system. It is the site of actual gas exchange known as internal respiration. The human body has approximately 300 million alveolus. Each of them performs specifically to allow the oxygen to enter your body and the carbon dioxide to exit. Whenever you inhale, the diameter of the individual alveolus increases to accommodate the  ...

Routes Of Circulation
...  ventricle is also included, and it is to expel the blood, so is the pulmonary trunk, pulmonary valve and the pulmonary arteries. It is the pulmonary capillaries that is responsible for the waste gas exchange. The blood which is oxygenated will then be transported back to the heart through the pulmonary veins. The body’s circulatory system, which are not involved in the routes of  ...


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