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How does the concentration gradient help in the diffusion of gases in the lungs?
Wiki User
∙ 13y ago
Just like particles of different charge are attached to each other, particles tend to go from place where's concentration bigger to places where there's lower. No energy is required for this process. Once, lungs are wide open, air goes in because the pressure in lungs is smaller than one around us. Blood that's full of CO2 comes into the lungs. Since there's more CO2 in the blood than there's in the lungs, and more O2 in the lungs than there's in the blood, O2 goes to the blood and CO2 goes to the lungs, thanks to this process. Then, the blood that full of O2 goes to the cells. Cells are always full of CO2 since they're constantly performing oxidation . Then, the same thing happens. CO2 comes out of the cells and goes to the blood since there's less of it in the blood, and O2 goes into the cells. Thanks to this particles trait, there's no energy that is used for O2 going to the blood and cells.
I hope I made this more clear for you, and I'm sorry for my bad English.
Wiki User
∙ 12y ago
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What is the term that pertains to the exchange of gasses between the blood and alveolar air?
The air of the alveoli has a greater partial pressure of oxygen than blood and a lower partial pressure of carbon dioxide. This creates a gradient across the membrane. The gases diffuse from an area of high concentration to an area of low concentration, thus the carbon dioxide moves out of the blood into the air and the oxygen moves from the air into the blood. According to Fick's law this diffusion is porportional to (diffusion gradient x membrane permeability)/thickness of the membrane also called cellular respiration
When diffusion occurs in body cells and our lungs which way does it move?
The movement of molecules of a substance from its higher concentration to its lower concentration by their own kinetic energy is called diffusion. Thus abiding the principle of diffusion it occurs in our body cells and lungs both ways. In lungs the molecules of oxygen diffuse inside the blood and for carbon dioxide molecules outside.
How does diffusion take place in digestive systems?
In mammals diffusion occurs at 2 places in the respiratory system. The first place it occurs is in the lungs. The carbon dioxide from the blood diffuses into the lungs and the oxygen in the lungs diffuses into the blood. The second place where diffusion occurs is at the cell. Carbon dioxide diffuses out of the cell and into the blood whereas oxygen diffuses into the cell from the blood. Glucose is also diffused from the capillary to the respiratory cells, since they need energy to function properly. Remember that diffusion works in a certain way: Molecules in a highly concentrated area will naturally diffuse into an area with lower concentrations of that particular substance, until eventually all of the molecules of that substance are evenly spread out within that area.
Which is used for oxygen transportation in living organisms?
Im guessing you were asking whether diffusion, osmosis or active transport is used for oxygen transportation in organisms. Diffusion is the random movement of particles from an area with a high concentration to an area with a lower concentration. So in humans for eample, gas exchange occurs in the lungs where there is a lower concentration of oxygen in the blood and a high conc of oxygen in the lungs. The oxygen then diffuses into the blood.
What structure is adapted for the diffusion of gases?
The lungs have been adapted especially for making gas exchange more efficient. They are made up of clusters of alveoli, which are tiny air sacs with large surface areas, and are kept moist. They also have a rich blood supply, which maintains a concentration gradient in both directions. Carbon dioxide constantly being removed from the blood and oxygen constantly entering the lungs means that gas exchange happens at the highest concentration gradients to make it rapid and effective.
What is the Diffusion of gases between alveoli and blood?
The Diffusion is the exchange of oxygen (O2) and carbon dioxide (CO2) between the alveoli and the blood. So blood that is pumping through the capillaries in the lungs has a low concentration of O2 and a high concentration of CO2, in the alveoli it is high concentration O2 low concentration CO2. Therefore the 2 gases exchange across the alveoli membrane by diffusion trying to establish a concentration gradient.
What determines in which direction carbon dioxide and oxygen will diffuse in the lungs and tissues?
Diffusion, whether of gases or some other substance, is always dependent on a diffusion gradient. Diffusion always occurs from an area of high [H] concentration to an area of low [L] concentration.In the case of the lungs:oxygen moves from a [H] concentration in the lungs/alveoli to a [L] concentration in the bloodcarbon dioxide moves from [H] concentration in the blood to a [L] concentration in the lungs/alveoliWith tissues, the situation is much the same:oxygen moves from a [H] concentration in the blood to a [L] concentration in the tissuescarbon dioxide moves from a [H] concentration in the tissues to a [L] concentration in the blood
How would the movement of CO2 be affected if the concentration of CO2 in the lungs was equal or higher than the concentration in the blood?
If the concentration of CO2 in the lungs was higher or equal the concentration in the blood, there will be no diffusion of CO2 in the air of the lungs. The person will suffocate in this situation.
How do diffusion osmosis facilitated diffusion and active transport diffusion differ?
Diffusion is the movement of molecules from an area of greater concentration to an area of lesser concentration. e.g. Exchange of gases in the lungs or body tissues. Osmosis is the diffusion of water through a semi-permeable membrane from an area of low solute to an area of high solute concentration. Faciliated diffusion is the passive transport of molecules down a concentration gradient. It is simply diffusion that involves a protein to make diffusion happen more easily across a cell membrane. Active transport is the moving of substances across the cell membrane using the cell's energy. Molecules are moved against a concentration gradient, i.e they move from an area of lesser concentration to an area of greater concentration. Tlhis is done by a carrier molecules which gets its energy from ATP.
What happens in gaseous exchange?
The diffusion of gases takes place from their higher concentration to lower concentration. Exchange of oxygen by carbondioxide is the usual feature of breathing by lungs.
What is the term that pertains to the exchange of gasses between the blood and alveolar air?
The air of the alveoli has a greater partial pressure of oxygen than blood and a lower partial pressure of carbon dioxide. This creates a gradient across the membrane. The gases diffuse from an area of high concentration to an area of low concentration, thus the carbon dioxide moves out of the blood into the air and the oxygen moves from the air into the blood. According to Fick's law this diffusion is porportional to (diffusion gradient x membrane permeability)/thickness of the membrane also called cellular respiration
How oxygen enters a red blood cell from alveoli in the lungs?
Diffusion along the (partial) pressure gradient.
Why do lungs have thin permeable walls?
diffusion of gases (oxygen and carbon dioxide) to & from air in lungs and capillaries in alveoli
Why is a large surface area necessary for the alveoli in the lungs?
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.
Where diffusion occur in living organisms?
Diffusion is one of the processes of transferring materials within the cells of living organisms. An example of diffusion is the exchange of gases in the lungs.
How your lungs refine oxygen from other gases?
Your lungs refine oxygen from the other gases in air because the gases diffuse through the cell walls in the alveoli in your lungs through osmosis (higher concentration of gases in the air than in the blood, so gases move from the higher concentration to the lower concentration) where they contact the red blood cells. The hemoglobin in the red blood cells binds to the oxygen and leaves all the other gases alone. It moves on from the lungs and delivers the oxygen to the rest of the body. It's the hemoglobin that does the work.
When diffusion occurs in body cells and our lungs which way does it move?
The movement of molecules of a substance from its higher concentration to its lower concentration by their own kinetic energy is called diffusion. Thus abiding the principle of diffusion it occurs in our body cells and lungs both ways. In lungs the molecules of oxygen diffuse inside the blood and for carbon dioxide molecules outside.
