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Respiratory Study Guide
Gas Exchange
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ê means decrease
é means increase
External Respiration (capillaries and alveoli)
| Summary of Gas Exchange
Entering Alveolar Capillaries |
| Alveoli (Inspired Air)
êPCO2 éPO2 |
| Entering Alveolar Capillaries
é PCO2 ê PO2 |
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Summary of Gas Exchange Leaving Alveolar Capillaries |
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Alveoli (Expired Air) é PCO2 (Compared to inspired air) ê PO2 (Still high but lower than inspired air) |
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Exiting Pulmonary Capillary êPCO2 (compared to blood entering capillaries) éPO2 |
Internal Respiration (capillaries and tissues)
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In the tissue |
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é PCO2 ê PO2 because cellular respiration constantly uses the O2 to break down glucose and it constantly releases CO2 |
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CO2 leaves the tissues through diffusion. (high concentration to low concentration) |
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In the capillaries |
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êPCO2 éPO2 Blood carries in more O2 so it is high in O2 compared to the tissues In constantly takes the CO2 away to it is low in CO2 compared to the tissues |
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O2 leaves the capillaries through diffusion (high concentration to low concentration) |