EPITHELIUM CONNECTIVE TISSUE SKIN
EPITHELIA GLANDS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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blocks diffusion or osmosis
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secretion and cilia-aided movement
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filtration and stretching
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absorption and filtration
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Detailed explanation-1: -The ciliated pseudostratified columnar epithelium allows the movement of the particles, which helps in the excretion of foreign particles and the secretion of mucus.
Detailed explanation-2: -The presence of pseudostratified columnar epithelium in the upper respiratory tract (composed of the nose, trachea and bronchi) protects the lungs from these irritants. Goblet cells of the epithelium secrete mucus to trap particles and prevent them from traveling further down respiratory passages.
Detailed explanation-3: -The function of ciliated epithelium and mucous-secreting cells: The cilia and the mucus prevents the entry of dust particles and germs into the nasal cavity. The mucous secreting cells secrete mucous, making the inhaled air moist and warm inside the nasal passage.