Question
Distinguish between : External respiration and Internal respiration.
✓
Answer
| External respiration | Internal respiration |
| 1. The respiratory processes occurring in lungs is called external respiration. | 1. The respiratory processes that occur in tissues is called internal respiration. |
| 2. During external respiration O2 from the lungs enters into the lung capillaries by diffusion. | 2. During internal respiration O2 from the blood enters the tissue cells. |
| 3. During external respiration CO2 from the lung capillaries diffuse into the lungs. | 3. During internal respiration CO2 from the tissues enters into the blood. |
| 4. During external respiration exchange of gases takes place between the air and the lungs. | 4. During internal respiration exchange of gases take place between the blood and the tissue. |
| 5. Formation of oxyhaemoglobin takes place during external respiration. | 5. Oxyhaemoglobin dissociates into oxygen and haemoglobin during internal respiration. |
| 6. During external respiration CO2 is released. | 6. During internal respiration carbamino haemoglobin is formed which is carried to the lungs. |
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