What type of epithelial tissue lines the trachea?

• A. Stratified squamous epithelium
• B. Simple squamous epithelium
• C. Pseudostratified columnar epithelium
• D. Transitional epithelium

Answer: (C)

Verified step by step guidance

1. Understand the function of the trachea: The trachea, or windpipe, is a part of the respiratory system that connects the larynx to the bronchi, allowing air passage to the lungs.
2. Identify the role of epithelial tissue in the trachea: The epithelial tissue lining the trachea is responsible for protecting the underlying structures and facilitating the movement of mucus.
3. Recognize the characteristics of pseudostratified columnar epithelium: This type of epithelium appears to be stratified (layered) but is actually a single layer of cells with varying heights, giving a false impression of multiple layers. It often contains cilia and goblet cells.
4. Relate the structure to function: The cilia on the pseudostratified columnar epithelium help move mucus and trapped particles out of the respiratory tract, which is crucial for keeping the airways clear.
5. Conclude why pseudostratified columnar epithelium is suitable for the trachea: Its structure allows for efficient protection and cleaning of the respiratory tract, making it the appropriate lining for the trachea.