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Multiple Choice
Which type of epithelium lines the oropharynx?
A
Transitional epithelium
B
Simple columnar epithelium
C
Simple cuboidal epithelium
D
Stratified squamous epithelium
Verified step by step guidance
1
Understand the function of the oropharynx: The oropharynx is part of the pharynx located behind the oral cavity. It serves as a passageway for both food and air, making it subject to mechanical stress and abrasion.
Recall the characteristics of stratified squamous epithelium: This type of epithelium is composed of multiple layers of cells, providing protection against mechanical stress, abrasion, and pathogens. It is commonly found in areas exposed to friction or wear.
Eliminate incorrect options: Transitional epithelium is specialized for stretching and is found in areas like the urinary bladder. Simple columnar epithelium is involved in absorption and secretion, typically found in the digestive tract. Simple cuboidal epithelium is associated with secretion and absorption in glands and ducts. None of these are suited for the protective role required in the oropharynx.
Match the correct epithelium type to the function of the oropharynx: Since the oropharynx is exposed to mechanical stress from food and air, stratified squamous epithelium is the most appropriate tissue type to provide protection.
Conclude that the correct answer is stratified squamous epithelium, as it aligns with the functional requirements of the oropharynx and is commonly found in areas subject to abrasion.