Question

Epithelial cells with cilia are found in ...................... of our body.

Answer 1

Hint: Minute hair like structures lining the surface of a cell are referred to as cilia. These cilia act by wiping the dust particles and bacteria trapped in the mucus towards the backside of the throat from where it can be further engulfed.

Complete answer:
-A pseudostratified columnar epithelium lined by cilia is present in the respiratory system. Majority of the respiratory tract found are lined by this ciliated epithelium. However, larynx or pharynx is not lined by this pseudostratified columnar epithelium. The mucus along with trapped foreign particles is pushed by the respiratory tract.
-The respiratory epithelium contributes in establishing lung immunity in several diverse methods. A wide variety of different cell types lines the respiratory tracts extending from the nose towards the alveoli. They help by acting as a physical barrier against any sort of infection. Ciliated epithelial cells remove dust particles by propelling the mucus upward in the airways. Goblet cells as well as tracheobronchial glands serve as a significant source for removal of mucus present in the airways. They trap the particles in a non-specific manner. The regulation of movement of water as well as ions towards the airway mucus is carried out by the respiratory epithelium.
-Thus, epithelial cells with cilia are found in the respiratory system of our body.

Note: Ciliated epithelial cells remove the foreign particles by propelling mucus up the airways. The human respiratory tract is lined by the ciliated epithelium from posterior third in the nose towards the level of the respiratory bronchioles.