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Multiple Choice
Which body system contains pseudostratified columnar epithelium?
A
Circulatory system
B
Digestive system
C
Respiratory system
D
Nervous system
Verified step by step guidance
1
Understand the structure of pseudostratified columnar epithelium: This type of epithelium appears to have multiple layers due to the varying positions of nuclei within the cells, but it is actually a single layer of cells. The cells are columnar in shape and often have cilia on their surface.
Identify the function of pseudostratified columnar epithelium: This epithelium is primarily involved in secretion and movement of mucus, thanks to the presence of goblet cells and cilia.
Consider the body systems listed: Circulatory, Digestive, Respiratory, and Nervous systems. Determine which system requires the functions provided by pseudostratified columnar epithelium.
Recognize that the respiratory system, particularly in the trachea and upper respiratory tract, utilizes pseudostratified columnar epithelium to trap and move particles out of the airways through the action of cilia and mucus.
Conclude that the respiratory system is the correct answer, as it is the system where pseudostratified columnar epithelium is commonly found, performing its role in protecting and maintaining the airway.