Question: 154: Which of the following types of epithelium is present in the bronchioles and Fallopian tubes?
(1) Simple squamous epithelium
(2) Simple columnar epithelium
(3) Ciliated epithelium
(4) Stratified squamous epithelium
Answer: Option (3)
Explanation:
Ciliated epithelium consists of epithelial cells that bear hair-like projections called cilia on their free surface.
In bronchioles, the cilia help in moving mucus and trapped dust particles towards the throat, thereby keeping the respiratory passages clear.
In the Fallopian tubes, ciliated epithelium helps in the movement of the ovum from the ovary towards the uterus.
Simple squamous epithelium is mainly involved in diffusion and is found in alveoli and blood vessels.
Simple columnar epithelium is mainly involved in absorption and secretion, and stratified squamous epithelium provides protection in areas subject to wear and tear.
Therefore, the epithelium present in bronchioles and Fallopian tubes is ciliated epithelium.