Alveoli are particular to mammalian lungs. ... The alveoli are found in the respiratory zone of the lungs, ... Q: Why does surface tension exists in the alveoli ...
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alveoli Tiny, thin-walled, inflatable sacs in the lungs where oxygen and carbon dioxide are exchanged.
amensalism A symbiotic relationship in which members of one population inhibit the growth of another population without being affected.
In the serous alveoli the cells almost completely fill the cavity, so that there is hardly any lumen perceptible; they contain secretory granules imbedded in a closely reticulated protoplasm (Fig. 1026).
alveoli
The Southwest Environmental Health Sciences Center
The Biology Project
The University of Arizona
Tuesday, October 14, 1997
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Alveoli contain phagocytes to kill bacteria that have not been trapped by mucus
O2 diffuses down its conc. gradient from air to blood; CO2 diffuses from blood to air
Ventilation: Flow of air in and out of alveoli
Ventilation ...
In the alveoli capillaries, bicarbonate combines with a hydrogen ion (proton) to form carbonic acid, which breaks down into carbon dioxide and water. The carbon dioxide then diffuses into the alveoli and out of the body with the next exhalation.
Only in the alveoli does actual gas exchange takes place. There are some 300 million alveoli in two adult lungs. These provide a surface area of some 160 m2 (almost equal to the singles area of a tennis court and 80 times the area of our skin!).
alveoli
(al-vee-oh-lus) [L. dim. of alveus, cavity, hollow]
(1) One of the deadend, multilobed air sacs that constitute the gas exchange surface of the lungs. (2) One of the milk-secreting sacs of epithelial tissue in the mammary glands.
The lungs of mammals are a rich lattice of alveoli, which provide an enormous surface area for gas exchange. A network of fine capillaries allows transport of blood over the surface of alveoli.
The blood then flows through the capillaries surrounding the alveoli in the lung where CO2 is released and O2 is picked up. The capillaries reform to give rise to the pulmonary vein (with oxygenated blood) which leads back to the left atrium.
Smokers can have a build up of tar and clog the alveoli in the lungs and decrease the amount of oxygen your body can take in. An extreme disease called emphysema actually destroys the tissues in your lungs and the tissue can never be regenerated.
Emphysema rupture and/or coalescing of alveoli with scar tissue formation causing loss of elasticity in the lungs
(emphys = inflate)
Empyema an infection in the chest cavity outside of the lungs
(empyema = form pus) ...
emphysema An irreversible, obstructive lung disease in which airways become permanently constricted and alveoli are damaged or destroyed.
Emulsify To produce small droplets of a liquid.
emulsion A colloidal system in which both phases are liquids.
Extrinsic allergic alveolitis (β links)
Fissiparous (β links)
Acoustic aphasia (β links)
Breakbone fever (β links)
Liberties (β links)
Spontaneity (β links)
Recanalization (β links)
Hammans syndrome (β links) ...
 See also: Cells, Human, Trans, Membrane, Blood
  
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