Which type of epithelial tissue lines the oropharynx and laryngopharynx?

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

Answer: (B)

Verified step by step guidance

1. Understand the function and location of the oropharynx and laryngopharynx. These areas are part of the throat and are involved in the passage of food and air, requiring protection from abrasion.
2. Identify the characteristics of different types of epithelial tissues. Simple columnar epithelium is typically found in areas where absorption and secretion occur, such as the intestines. Simple cuboidal epithelium is found in glandular tissues and kidney tubules. Transitional epithelium is specialized for stretching and is found in the urinary bladder.
3. Recognize that stratified squamous epithelium is designed to protect against mechanical stress and abrasion, making it suitable for lining areas exposed to friction, such as the oropharynx and laryngopharynx.
4. Consider the protective role of stratified squamous epithelium in areas subject to wear and tear, such as the mouth, throat, and esophagus, where it provides a durable surface.
5. Conclude that the oropharynx and laryngopharynx are lined with stratified squamous epithelium due to their need for protection against abrasion from food particles and air passage.