what are alveoli ?where it is present.
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Answer: ALVEOLI
Explanation: Alveoli are tiny balloon shaped structures and are the smallest passageway in the respiratory system. The alveoli are only one cell thick, allowing the relatively easy passage of oxygen and carbon dioxide (CO2) between the alveoli and blood vessels called capillaries.
Lung alveoli are present in the lungs. They are branching from either alveolar sacs or alveolar ducts
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Alveloi are tiny air sacs in your lungs that take up the oxygen you breathe in and keep your body going although there are microscopic alveoli are the workhorses of your respiratory system you have about 480 alveoli located at the end of bronchial tubes
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