Question

How is the oxygen absorption in the blood takes places?

( in English please) :)

Answer 1

To maintain the absorption of oxygen and the emission of carbon dioxide, between 5 and 8 L of air enters and leaves the lungs per minute, with about 30% of each liter (about three-tenths of a gallon) being transferred every minute of oxygen from the alveoli to the blood, even when the person is at rest. At the same time, a similar volume of carbon dioxide passes from the blood into the alveoli and is exhaled. During exercise, it is possible to breathe more than 100 L of air per minute and extract 3 L of oxygen per minute from this air. The rate of entry of oxygen into the body is an important measure of the total amount of energy consumed by it. Inspiration and expiration are carried out thanks to the respiratory muscles.