Zamoraalvin01viz
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Describe the blood flow & gas exchange within the heart circulatory system and lungs.

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Acceberviz
the amounts of respiratory gases vary in inspired alveolar,and expired air. Inspired air contains about 21 percent oxygen and 0.04 percent of carbon dioxide.
Retzviz
the amounts of respiratory gases vary in inspired alveolar,and expired air. Inspired air contains about 21 percent oxygen and 0.04 percent of carbon dioxide.

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