Which of the following epithelial tissue lines the inner surface of the respiratory tract?
A
Simple squamous
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B
Cuboidal
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C
Stratified squamous
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D
Columnar
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Solution
The correct option is D Columnar The epithelial cells line the internal surface of the organs and provide protection. The columnar epithelium tissue is found in the internal surface of the respiratory tract (trachea). These are column-like tall cells with cilia that allow the dust particles and mucus to be swept out by its lashing movement.