NEETZoologyBreathing and Exchange of Gases
What are the borders of the thoracic chamber?
Options
- AThe spine and the sternum
- BThe ribcage and the diaphragm
- CThe diaphragm and the spine
- DThe ribcage and the sternum
Correct answer
B. The ribcage and the diaphragm
Step-by-step solution
whereas the alveoli and their ducts form the respiratory or exchange part of the respiratory system. The conducting part transports the atmospheric air to the alveoli, clears it from foreign particles, humidifies and also brings the air to body temperature. Exchange part is the site of actual diffusion of O2 and CO2 between blood and atmospheric air. The lungs are situated in the thoracic chamber which is anatomically an air-tight chamber . The thoracic chamber is formed dorsally by the vertebral column, ventrally