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According to fick's law
rate of diffusion =(proportional to)= Surface area x Diffusion gradient
Diffusion Pathway thickness
So for a sufficient rate of diffusion, Surface area must be large
The diffusion pathway is already at it's minimun of 1 cell thick and the gradient is harder to adjust.
There are around 600 million alveoli in the lungs that have a cummulitive surface area of around 70m2.
What else can I help you with?
What organ does oxygen pass from into the capillaries?
I believe its the alveoli in the lungs. These alveoli provide a large surface area for gaseous exchange.
Where in the lungs does gas exchange happen?
AlveoliGaseous exchange takes place in the alveoli of the lung
What is tiny sacs within the lungs which increases the respiratory surface?
The alveoli in the lungs.
What is the part of alveoli in our body?
There are about 300 million alveoli in each of your lungs. These tiny air sacs provide an ideal site for the diffusion of gases into and out of the blood - also known as gaseous exchange. The alveoli have a very large surface area - in fact if all of the alveoli in your lungs were spread out flat they would cover the area of a tennis court. This large surface area is the result of all the alveoli being small spheres - it is another example of the importance of the surface area- to-volume ratio. If your lungs were simply two large balloon-like structures, the surface area wouldn't be big enough for you to get enough oxygen by diffusion to supply the needs of your cells. But each alveolus is a very tiny sphere. The smaller the radius of a sphere, the bigger the relative surface area - halving the radius increases the relative surface area by a factor of four. 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 the blood. The alveoli have a good air supply from the bronchioles and a rich blood supply. This is vital for successful gaseous exchange because it maintains a steep concentration gradient for oxygen from the air in the alveoli to the blood, and for carbon dioxide from the blood to the alveoli.
Why do mammals have large numbers of alveoli?
There are about 300 million alveoli in each of your lungs. These tiny air sacs provide an ideal site for the diffusion of gases into and out of the blood.The alveoli have a very large surface area. In fact if all of the alveoli in your lungs were spread out flat they would cover the area of a tennis court. This large surface area is the result of all the alveoli being small spheres. It is another example of the importance of the surface area: volume ratio.
Why is 300 million alveoli in one pair of lungs?
The large number of alveoli increases the surface area over which gas exchange can occur, allowing the blood to become oxygenated more quickly.
Around the wall of each air sac in the lungs web of?
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 the blood. The alveoli have a very large surface area – in fact if all of the alveoli in your lungs were spread out flat they would cover the area of a tennis court.This large surface area is the result of all the alveoli being small spheres – it is another example of the importance of the surface area: volume ratio.
Tiny sacs within the lungs which increases the respiratory surface?
alveoli
Why can the lungs absorb a large amount of oxygen?
1) It's not the lungs. It's the haemoglobin in blood cells that allow blood cells to carry oxygen to where it is needed.2) Lungs can absorb a large amount of oxygen because of alveoli. There are small tubes in lungs which have alveoli at there ends. The alveoli are surrounded by a network of capillaries. At these capillaries is where the blood picks up its cargo of oxygen from the air.Oh and it is hemoglobin not haemoglobin okay Soggy2002!I happen to be from England, the birthplace of the English language, where we spell it 'haemoglobin'. Okay, MsMM1987?Air moves from the trachea to the bronchi the passage that direct air into the lungs
What makes the lungs strong?
The alveoli and the breathing route: nose + mouth to--> trachea to--> bronchus to--> bronchi (not the same as bronchus, I don't know why) to--> bronchioli -->alveoli -->capillary and then return to deflate
Reduces the surface tension of the fluid in the alveoli?
Surfactant, a substance produced by type II alveolar cells in the lungs, reduces the surface tension of fluid in the alveoli. This helps to prevent the collapse of alveoli during expiration and facilitates the exchange of gases in the lungs.
How does the structure of the alveoli relate to the structure of the lungs?
Alveoli are similar to cells in the sense that they have a large surface area to volume ratio. This is advantageous since they depend on there surface to allow as much oxygen as possible to diffuse through. Therefore, the correct answer would be something like this : Since alveoli's have a large surface area to volume ratio, it oxygen to diffuse through. More oxygen can be absorbed. If the alveoli had a smaller surface area to volume ratio, it would be very difficult for oxygen to diffuse through. Therefore, it is advantageous for the alveoli to be small in volume, but great in surface area.
