Ciliated epithelium is found in a. Oviduct b. Trachea c. Nasal cavity d. All the above
Hint: Epithelial tissue which bears cilia on their free surface are called ciliated epithelium. These cilia move back & forth at their mean position to move particles ahead.
Complete answer: Let’s first need to understand what epithelium is? So, epithelium is a type of tissue that lines our body from outside as well as from inside i.e. act as a protective lining for the body. So ciliated epithelium are modified columnar epithelium or cuboidal epithelium which bears cilia at their free surface. They are generally found in our hollow body cavity to push the mucus & waste particles to avoid their accumulation inside our body. For example, they are found in the inner lining of our respiratory tract & fallopian tubes. Ciliated epithelium has certain characteristics and these are as follows: It lines the trachea, bronchi (lungs), nasal cavities, uterus, oviduct in female, vas deferens and epididymis in male. The superficial cells of stratified ciliated epithelium are ciliated and columnar. It lines parts of the respiratory passages, vas deferens, and epididymis. Transitional epithelium lines the urinary bladder; its appearance depends upon whether the bladder is contracted or distended.
So, the correct answer is (D), All the above.
Note: The respiratory tract is lined by ciliated pseudostratified columnar epithelium. It finds its name due to the arrangement of the multiple cell types in the respiratory tract. All cells consist of a single layer of cells, but their nuclei are not aligned in the same plane. Ciliated epithelium moves the particles over the epithelial surface of the trachea, bronchial tubes, etc. Generally they are found in the vicinity of goblet cells (mucus-secreting cells).The hair-like structure, called cilia, move back and forth to help move particles out of our body. Ciliated epithelial tissue is found in the respiratory tract, fallopian tubes of women.
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