How are the lungs designed in human being to maximise the area for exchange of gases
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Lungs play a major role in the respiratory system. In humans, a pair of lungs are designed in such a way that they are lined by a thin membrane, the smaller tubes called bronchioles a balloon-like structure called alveoli and network of blood capillaries increase the surface area for exchange of gases.
Humans have two lungs and are situated within the thoracic cavity of the chest. They are soft spongy and elastic organ enclosed in a thin membranous sac called the pleura. Lungs are divided into a smaller structure called bronchi which are divided into bronchioles. Alveoli are small, round or balloon-like structure found the end of the bronchioles and provide a larger surface area and maximizes the exchange of gases inside the lungs.
For more information on Lungs and other parts of the human respiratory system
Explanation: THE LUNGS SURROUNDED BY THE RIB CAGE AND THE MUSCLE. THEY ARE AS FOLLOWS :
VENTRALY THE LUNGS IS COVERED BY STERNUM, DORSALLY THE VERTIBRAL COLUMN, SIDE THE RIBS IS PRESENT. ALSO IN THE LUNGS THE RESPIRATORY MUSCLES IS PRESENT WHICH ARE INTERNAL INTER-COASTAL MUSCLE AND EXTERNAL INTERCOASTAL MUSCLE.