The method of bringing oxygenated air into contact with a gas exchange surface is called ?
Correct answer: B. Ventilation
- A. Photorespiration
- B. Ventilation
- C. Gaseous transport
- D. Respiration
Explanation
Ventilation is the process of moving air in and out of the respiratory system, allowing for the exchange of gases (such as oxygen and carbon dioxide) between the respiratory surface (e.g., lungs or gills) and the external environment. It is a fundamental process for organisms with respiratory systems to obtain oxygen for respiration and remove carbon dioxide as a waste product.
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About Gaseous Exchange in Lungs
Gaseous exchange in the lungs occurs across the thin, moist alveolar and capillary surfaces, where oxygen and carbon dioxide diffuse down partial pressure gradients. The topic covers alveolar adaptations, ventilation, the role of haemoglobin in oxygen transport, carbon dioxide carriage, and the difference between external gas exchange and cellular respiration.
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