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Grade 11 - External & Internal Respiration

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External respiration involves oxygen being taken up by capillaries in lung alveoli while carbon dioxide is released from the blood. Internal respiration transports oxygen in the blood from the lungs to cells, and transports metabolic carbon dioxide from tissue cells into the blood and to the lungs to ensure the exchange of gases.

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External respiration is a physical process in which oxygen is taken up by capillaries of lung alveoli and carbon- dioxide is released from blood.
Internal respiration is about ensuring the transport of oxygen in the blood from the lungs to the cells, and the transport of metabolic carbon dioxide from the tissue cells into the blood and to the lungs.
Grade 11 - External & Internal Respiration

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Grade 11 - External & Internal Respiration

  • 2. External respiration is a physical process in which oxygen is taken up by capillaries of lung alveoli and carbon- dioxide is released from blood.
  • 3. Internal respiration is about ensuring the transport of oxygen in the blood from the lungs to the cells, and the transport of metabolic carbon dioxide from the tissue cells into the blood and to the lungs.