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Why are there large numbers of blood vessels around each alveolus?
because lots of oxygen needs to travel around
Why does oxygen diffuse from an alveolus to the blood around it?
Oxygen diffuses from an alveolus to the blood around it because of the concentration gradient between the high oxygen concentration in the alveolus and the lower oxygen concentration in the blood. This process allows oxygen to move from the lungs into the bloodstream for transport to the body's cells.
Why is the alveolus suitable as a place dor diffusion of gases?
The thin membranes are surrounded by blood vessels, enabling easy gas exchange.
Because there is more oxygen in an alveolus than in the blood around it oxygen diffuses?
When there is more oxygen in an alveolus than in the blood around it oxygen diffuses from the capillaries to the veins. This is due to the high concentration of oxygen in the alveoli.
Surronding each air sac are small tubes that bring and carry blood what are they called?
The capillaries are the small blood vessels that surround each alveolus, or air sac.
Why is the distance between the air in an alveolus and the blood in an alveolar capillary is less than 11000th of a millimetre?
Around the lungs,the blood is separated from the air inside each alveolus by only two cell layers; the cells making up the wall of the alveolus and the capillary wall itself. This is a distance of less than a thousandth of a millimetre. Because the air in the alveolus has a higer concentration of oxygen than the blood entering the capillary network, oxygen diffuses from the air across the wall of the alveolus and into the blood. That is why the distance is important.
Each alveolus is surrounded by a network of what?
Each alveolus is surrounded by a network of capillaries, which are tiny blood vessels responsible for the exchange of oxygen and carbon dioxide with the surrounding tissues. This network allows efficient gas exchange to occur in the lungs.
What is the work of blood vessels?
the blood vessels are the passageways of blood from the heart and back to it after it circulate around the body.
Why are there blood vessels around the brain?
The blood vessels around the brain help supply energy for your brain
What is the name of the tubes that carry the blood around the body?
Blood vessels are the tubes that carry blood around the body. Blood vessels include capillaries, veins, and arteries.
Name the process involved in the passage of gas between the alveolus and the blood?
The process involved in the passage of gas between the alveolus and the blood is called gas exchange. This occurs through diffusion, where oxygen moves from the alveolus into the capillaries and carbon dioxide moves from the capillaries into the alveolus.
Surrounding each air sac are small tubes that bring and carry away bloodthey are called what?
The capillaries are the small blood vessels that surround each alveolus, or air sac.
