Explain in brief.
1. Distinguish between external and internal respiration.
2. How do the alveoli function? Explain with a diagram.
3. What is the role of haemoglobin in respiration?
4. What is the role of the diaphragm and the ribcage in breathin
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Explanation:
External respiration describes respiration that occurs between the external environment and the cells of the body.
Internal respiration occurs within cells of the body and involves all body cells, not just cells of the lungs. It uses oxygen to break down molecules in order to release energy in the form of adenosine triphosphate (ATP). Internal respiration is often also called cellular respiration since it occurs within the cell.
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