The alveolar epithelium in the lung is (a) non - ciliated squamous (b) non-ciliated squamous
The alveolar epithelium in the lung is
(a) non - ciliated squamous
(b) non-ciliated squamous
(c) ciliated columnar
(d) ciliated squamous
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Correct Option (b) non-ciliated squamous
Explanation:
Tine wall of alveoli is highly vascularised. It is surrounded by flattened, non-ciliated squamous cells to increase the surface area. Simple columnar ciliated cells line the few portions of upper respiratory tract, oviduct, Fallopian tube and neurocoel of CNS, whereas non-ciliated columnar epithelium lines stomach, intestine, digestive glands and gall bladder.
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