Respiratory system

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Last updated 5:50 AM on 4/20/26
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4 Terms

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4 Stages in respiration

  1. breathing: inspiration(inhaling), and expiration (exhaling)

  2. External Respiration: gas exchange between air and blood

  3. Internal Respiration: gas exchange between blood and body tissues

  4. cellular respiration: energy being released in cellular respiration

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how is oxygen transferred from alveoli to capillaries

  1. diffusion, high to low concentration of oxygen into capillaries

  2. facilitated diffusion, 30% of oxygen is transferred through channel proteins to sped up the process