Which of the following tissues lines the majority of the digestive tract?

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

Answer: (A)

Verified step by step guidance

1. Understand the function of the digestive tract: The digestive tract is responsible for absorbing nutrients and secreting mucus to aid in digestion. The tissue lining must support these functions.
2. Review the characteristics of simple columnar epithelium: This tissue consists of tall, column-like cells specialized for absorption and secretion. It is commonly found in areas requiring efficient nutrient absorption, such as the stomach and intestines.
3. Compare the other tissue types: Adipose tissue is specialized for fat storage and does not line organs. Transitional epithelium is found in areas like the bladder, where stretching is required. Stratified squamous epithelium is designed for protection and is found in areas subject to abrasion, such as the esophagus and mouth.
4. Identify the tissue that matches the digestive tract's function: Simple columnar epithelium is the most suitable tissue for lining the majority of the digestive tract due to its role in absorption and secretion.
5. Conclude that simple columnar epithelium is the correct answer based on its structure and function, which align with the needs of the digestive tract.