Unlike other internal organs, the vulnerability of the lungs to infection arises from the continuous exposure of its vast surface area (150 m2) to a large variety and quantity of microorganisms in the inhaled air [11], and hence are vulnerable to inhalational inoculation with B. pseudomallei.
It's vulnerable because of that vast surface area - and the food we eat in 2015 is breaking down the membrane and introducing toxins and chemicals.
The most vulnerable areas include the mucosa of the eyes, mouth, throat, and the vast surface area of the upper and lower airways and lung tissue.
Researchers who have tested the impact of bio-char on soil fertility say that much of the benefit may derive from biochar's vast surface area and complex pore structure, which is hospitable to the bacteria and fungi that plants need to absorb nutrients from the soil.
The sorption process of activated carbon is considered primarily physical rather than chemical in the vast surface areas and microporous regions by weak electrical forces known as Van der Waals bonds.
For governorates with vast surface areas, this creates large uncertainty in regards to the true location.
Imagine a vast surface of little buckets made to collect light.
Minuscule terminal respiratory units developed, producing a vast respiratory surface area in a limited lung volume.
