how are the lungs designed in human beings to maximize the area for exchange of gases?
Answers
Answered by
3
Answer:
In the lungs, the air passage (wind pipe) divides into smaller tubes, called 'bronchi' in turn form 'bronchioles'. ... The alveoli have very thin walls and contain an extensive network of blood vessels to facilitate exchange of gases
Answered by
2
Explanation:
the lungs are of poor musculature and are enclosed within the thoracic cavity so the contraction and expansion of lungs depends upon thoracic cavity,sternum (the mid bone) and ribs .during inhalation diaphragm relaxes and becomes flattened the ribs expand and as a result the volume in thoracic cavity increases so pressure decreases and air gushes in and during exhalation the same opposite process happens.
Hope this clears your doubt,dear friend.
Similar questions