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www.reference.com/science/surface-area-human-lungs-ffc6ae1756c2f2e

According to InnerBody, the inner surface area of the human lungs measures between 80 and 100 square meters, which is comparable in size to half of a tennis court. The lungs are a pair of large, spongy organs that exchange oxygen and carbon dioxide between blood and the air.

www.ncbi.nlm.nih.gov/pmc/articles/PMC1271180

duguid jb, young a, cauna d, lambert mw. the internal surface area of the lung in emphysema. j pathol bacteriol. 1964 oct; 88:405–421. [dunnill ms. evaluation of a simple method of sampling the lung for quantitative histological analysis.

vedanadosah.cvtisr.sk/en/the-surface-area-of-a-pair-of-lungs-is-equal-to-that-of-a...

A human adult probably has about 300 million bronchi that could cover an area of around 180m2. A tennis court has an area of 195,63 m2. Our lungs have such a large surface area because of the fact that in order to supply our bodies with oxygen, our air intake must have the speed of at least 160 liters per hour.

www.ncbi.nlm.nih.gov/pmc/articles/PMC4919356

In general, a greater surface area appears more realistic when simulating therapeutic inhalation, while smaller surface areas are realistic for environmental exposure. Deep inhalation causes increase of lung surface area but is also accompanied by higher airflow and both parameters will influence particle deposition in a complex way.

www.innerbody.com/anatomy/respiratory/lungs

If the inner surface of the lungs could be stretched out flat, they would occupy an area of around 80 to 100 square meters — about the size of half of a tennis court! The lungs also provide us with the air we need in order to speak, laugh at jokes, and sing. Continue Scrolling To Read More Below...

en.wikipedia.org/wiki/Human_lung

The lungs of amphibians typically have a few narrow internal walls of soft tissue around the outer walls, increasing the respiratory surface area and giving the lung a honey-comb appearance. In some salamanders even these are lacking, and the lung has a smooth wall.

www.vendian.org/envelope/dir2/lungsout.html

The idea: You've an enormous surface (~400 m 2, with skin merely ~2 m 2).With it, you defuse, food and oxygen, with your environment. Just like all other cellular life. But your surface is easily forgotten, tucked away inside you as lungs and intestine.

www.answers.com/Q/How_do_you_calculate_surface_area_of_a_human_lung

Lungs have large interior surface area because they're not just big bags. On the inside, they're full of a spongy network of smaller, smaller, and ever-smaller air passage-ways, ending in tiny ...

www.healthline.com/human-body-maps/lung

The lungs are the main part of your respiratory system. Here is how lungs work as the center of your breathing, the path a full breath takes in your body, and a 3-D model of lung anatomy.

www.answers.com/Q/How_large_is_the_surface_area_of_your_lungs

This web is a large 'ball' of capillaries. The millions of tiny alveoli in the human lungs are a very effective adaptation which provides a huge surface area for gaseous exchange into and out of ...