Trace the pathway of O2 molecules travel from the air to the lungs, heart, and cells of the body, followed by CO2 molecules. Flashcards
1
Q
O2 molecules travel from the air to the lungs, heart, and cells of the body, followed by CO2 molecules.
A
Mouth → pharynx → trachea →bronchi → bronchioles → alveoli → heart → cells
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