Question

trace the pathway that oxygen take from air​

Answer 1

Answer:

Includes respiratory airways leading into (& out of) lungs plus the lungs themselves. Pathway of air: nasal cavities (or oral cavity) > pharynx > trachea > primary bronchi (right & left) > secondary bronchi > tertiary bronchi > bronchioles > alveoli (site of gas exchange)

PLEASE MARK BRAINLIEST ❤✌

Answer 2

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Answer:

Gas exchange occurs between the alveoli sacs and small capillaries of the circulatory system. Via this exchange, oxygen is delivered from the lungs to the bloodstream. The oxygen attaches to the hemoglobin of red blood cells. The red blood cells then transport the oxygen to cells, such as those located in your muscles.