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Pollution and smoke
Environmental conditions such as pollution and smoke could permanently damage the alveolar sacs.
lion
Alveolar sacs is the structural unit of lungs.Tiny blood capillaries fuse together to make up an alveolar sac.This structure of the sac is very important for the easy diffusion of respiratory gases across the membrane.
Hyper inflation of air sacs with destruction of alveolar walls.
Respiratory bronchioles end in alveolar sacs (alveoli).
Simple Squamous
The respiratory looks like an upside down tree, from the trunk to the branches and to fruit (such as an apple). From largest to smallest, the respiratory system consists of the throat to main bronchi, to bronchioles, to terminal bronchioles, to alveolar ducts, to alveolar sacs (aveoli look like tiny grapes).
Air filling the alveolar sacs.
Simple Squamous
Alveolar means pertaining the the alveolus (plural alveoli), the small air sacs in the lungs.
Alveolar volume is lung capacity. Alveoli are the air sacs in the bronchioles. How much air the lungs hold during both inspiration and expiration is lung capacity which is alveolar volume. Hope this helps