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 dead-end sacs called alveoli. Every tube, sac, detour, fork in the road, branch, split-off, and tiny dead-end has walls with surface area.
The speed at which oxygen can be transferred into the blood stream depends on the collective surface area of the alveoli contained in the lung. That is why we have alveoli, filling the lungs like a sponge. We need the oxygen collected by the bloodstream in order to burn the energy that our body has stored, and a faster input of oxygen allows a faster burning of that energy - hence the advantage of having that maximized surface area.
One common result of many years' smoking is that the wall between two adjacent passage-ways shrivels up and disappears, and those two passageways merge and become one. That reduces the surface area in that tiny part of the lung. When it progresses to thousands of tiny parts of the lung, you start to notice it ... you're short of breath, because the interior surface area of your lung is reduced, and you can't grab enough of the oxygen from the air you take in. That's the condition called 'emphysema'.
Tiny sacs that line the ends if our bronchioles, called alveoli. By enlarging the surface area-to-volume ratio, a greater volume of gases can be exchanged in the lungs.
The lungs have an extensive surface area, measuring around 30-50 square meters. This is in large part due to alveoli, which are smaller structures within each lobe of the lung.
The efficiency of gas exchange in the lungs of vertebrates is greater because it increases the lungs' internal surface area.
You have barile? Lungs have hierarchical structure which minimizes volume but maximises surface area Aveoli are the smallest units of structure and are the site of gaseous exchange: - They are circular = max surface area for min volume - Their most surfaces faciliate the exchange of gases - They have extensive blood supply which also faciliate the exchange
In terms of size, total surface area and weight, the lungs are the largest internal organs located in the chest.
Pleura is the double membrane that cover and line in the thoracic cavity.
Lungs can not and does not excrete salts from its surface.
Tumor is in the lungs and membranes around the lungs.
Think of it this way: Scrunch up a paper as tightly as you can and wrap it in as little plastic as you can. Notice that the area of the plastic can be smaller than the area of the paper that it is covering. It is due to the various internal alveoli, which are pouches, that the lung has such a large surface area.
lungs,
the bronchial tubes are part of an internal structure known as the respiratory tree. This structure is part of the respiratory system, which allows humans to exchange the air in their lungs. People need to breathe in air that is rich in oxygen. the air they breathe out has poor levels of oxygen. the bronchial tubes connect the lungs to the trachea to facilitate this...
The lungs don't have cartilage as such, the main "tubes" into the lungs have bands of muscle and cartilage to give them structure, because the lungs are very wet as they are covered in mucus if there was no support they would stick together and be held shut by surface tension (have you ever put a wet saucepan lid on to a work surface and couldn't remove it? same principle) if the tubes were stuck shut obviously you wouldn't be able to breathe :/
He died, "from an extensive disease of the lungs".
With their internal lungs - the same as we do!