Question

Inner lining of gut and stomach is made of

• A. Simple squamous epithelium
• B. Simple glandular columnar epithelium
• C. Simple cuboidal epithelium
• D. All of these

Answer 1

The correct option is B

Simple glandular columnar epithelium

The correct option is B:

Explanation of correct option:

1. Epithelial tissues are protective layers of cells.
2. They present on outer surfaces and in blood vessels throughout the body and also in the inner linings of the cavities.
3. Epithelial tissues are classified on the bases of their shape, several layers, and functions.
4. It is of three types: Squamous, Cuboidal, and Columnar epithelium.
5. The inner lining of the stomach and gut is made up of a Simple glandular columnar epithelium.
6. Simple glandular columnar epithelium is an oval-shaped, single layer of columnar cells.
7. This tissue is present in the membrane basement.
8. Their main function is secretion as they are adapted for it and absorption.

Explanation of incorrect option:

Option A:

1. Simple squamous epithelium is flattened cells that are made up of a single layer of squamous cells.
2. Their important function is the transportation of materials that allows diffusion and filtration.
3. They are located in the air sacs of the lungs, the lining of the heart, and lymphatic and blood vessels.

Option C:

1. Simple cuboidal epithelium is cuboidal cells that are made up of a single layer of cuboidal cells.
2. They perform the functions of absorption and secretion.
3. They are found in the kidney tubules and in secretory ducts of small glands.

Option D:

1. As only the Simple glandular columnar epithelium is found in the inner lining of the gut and stomach.
2. The other two epithelium such as Simple squamous epithelium and Simple cuboidal epithelium present in the lining of the heart and in secretory glands respectively.

Final Answer: Thus, the inner lining of the gut and stomach is made of Simple glandular columnar epithelium.