From what I've learned. . . .the respiratory system is responsible for bringing oxygen into our body and removing carbon dioxide that is not essential to our body. In this system, you can learn about ventilation and respiration, about the parts of the respiratory system and the upper and lower respiratory tract.
Suggestion. . . . . .well. . . . for easily understanding this system, you can look at pictures or graph and charts about the respiratory system so that you can determine and really understand the lecture.
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