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The Alveoli in the lungs have a very good capillary network because this is where gas exchange occurs. There needs to be sufficient area to allow the red blood cells to expel their carbon dioxide and to receive oxygen across the capillary and alveoli walls.
Wiki User
∙ 12y ago
Wiki User
∙ 15y agoTo make gas exchange more efficient. Gases diffuse into the blood, and the rate of diffusion is proportional to the distance across which they have to move. The closer the capillaries are to the alveoli, the easier and more efficient it is.
Wiki User
∙ 13y agoThis is one of many adaptations the alveoli have to make gas exchanges happen easily. The blood network in the alveoli is there so it's easy for gases to pass capillaries through.
Wiki User
∙ 12y agobecause of the exchange of co2 and o2
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Which lung pumps blood?
Lungs do not pump blood. They are the site of gas exchange between capillaries and alveoli.
What kind of blood cells surround the alveoli?
Alveoli are covered with capillaries. The deoxygenated blood that has come into the lung through the arteries flows through these capillaries, getting rid of carbon dioxide and accepting oxygen from the air that has been brought into the alveoli by the bronchioles. The carbon dioxide travels back out of the alveoli, through the bronchioles, into the bronchial tube system, and out the trachea each time you exhale.
Why is the blood pressure lower in lung capillaries than body capillaries?
Because if blood pressure in lung capillaries was as high as it is in body capillaries, the hydrostatic pressure caused by this blood pressure would force blood plasma out of the capillaries into intracellular spaces (as is done in body capillaries) or into the alveoli. This would reduce the efficiency of gas exchange.
What small structure in the lung is the site of oxygen exchange with blood capillaries?
The alveolus or alveoli (plural).
Are capillaries part of the lung?
Yes, capillaries form a network around the alveoli. It is through the alveolar walls and into the capillaries that oxygen enters the blood stream. Carbon dioxide leaves the blood by the reverse route.
What part of the lung does capillaries flow through?
They are present in the lung surrounding the alveoli.
What order does alveoli lung trachea nose and bronchi go in to reach the blood?
The correct order is:nosetracheamain bronchusbronchi (two) which is part of the lungsbronchioles - tinier than the bronchialveolismall capillaries surround each alveoli and cover each alveoli's surface-- CO2 passes from the alveoli to the venous blood supply; the blood passes O2 to alveoli and into the arterial blood supply
Where in the lung does exchange of O2 and CO2 take place?
It takes place between the alveoli and the blood capillaries
Air that leaves the air sacs is rich in the gas?
Oxygen is 'transported' from the lung capillaries to the body capillaries - in an inverse fashion carbon dioxide is transported from the body capillaries to the Lung Alveoli - the Answer is 'It is rich in CO2."
What are alveoli used for?
300 million to 400 million alveoli are in each lung. Each of the alveoli receives blood from the circulatory system capillaries. It replaces carbon dioxide and other blood wastes with oxygen. The circulatory system then delivers the oxygen to cells throughout the body, bringing more wastes back to the lungs.
How does the respiratory connect to the circulatory?
There is no anatomical connection of circulatory system with the respiratory system. Blood capillaries come in close contact with the lung alveoli. The area of contact is about 1000 square feet. But there are two thin membranes to separate blood and air. The walls of capillaries and the walls of alveoli. Both have flat and thin epithelium. The gases readily pass across these membranes.
What is blood carried to the heart by?
Unoxygenated blood travels to the heart though the veins to be pumped to your lung capillaries. At you lung capillaries the blood becomes oxygenated and then goes back to the heart to pump oxygenated blood to the rest of your body. the capillaries blood travels though you arteries.
