Alveoli of lungs are lined by _____________ epithelium:

squamous

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cuboidal

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columnar

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transitional

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Solution

The correct option is A
squamous

The squamous epithelium is made of a single thin layer of flattened cells with irregular boundaries. They are found in the walls of blood vessels and alveoli of lungs and are involved in a functions like forming a diffusion boundary.

Suggest Corrections

Similar questions

	I		II
(a)	Simple squamous epithelium	(i)	Ureters
(b)	Simple cuboidal epithelium	(ii)	Epididymis
(c)	Nonciliated simple columnar epithelium	(iii)	Lining of alveoli of lungs
(d)	Transitional epithelium	(iv)	Lining of thyroid vesicles
(e)	Pseudostratified nonciliated columnar epithelium	(v)	Mucosa of stomach and intestine

The alveoli are lined by simple squamous epithelium which is coated with a thin film of lecithin, a phospholipid. What purpose does this serve?

\begin{matrix} Column I & Column II (a) Squamous epithelium & (i) forms the lining of ducts of salivary glands (b) Columnar epithelium & (ii) forms the lining of the oesophagus (c) Cuboidal epithelium & (iii) forms inner lining of the intestine \end{matrix}

\begin{matrix} Type of Epithelial Tissue & Location (a) Squamous epithelium & (i) Lining of kidney tubules (b) Cuboidal epithelium & (ii) Skin (c) Columnar epithelium & (iii) Respiratory tract (d) Stratified squamous epithelium & (iv) Lining of mouth \end{matrix}

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