Question 21

Epithelial tissue is represented by the described characteristics.

The tissue examined under the microscope corresponds to epithelial tissue, as it is characterized by closely packed cells with minimal extracellular matrix, which aligns with the observation of tall and thin cells on the internal surface of the stomach.

A) Epithelial

Option A is correct because epithelial tissue is composed of tightly packed cells that cover and line surfaces, including internal organs like the stomach. The absence of a significant extracellular matrix and blood vessels is typical of epithelial tissues, which are nourished by diffusion from underlying connective tissues.

B) Connective

Option B is incorrect as connective tissue is characterized by a significant extracellular matrix and typically contains blood vessels. It serves to support, bind, and protect other tissues and organs, which does not align with the description of the tissue in question.

C) Muscle

Option C is incorrect because muscle tissue consists of cells that are specialized for contraction and movement, typically exhibiting a striated appearance or being smooth. The tall and thin cell morphology described does not correspond to the typical shapes of muscle cells.

D) Cartilage

Option D is incorrect as cartilage is a type of connective tissue that has a distinct extracellular matrix and is avascular, but it does not consist of tall and thin cells. Instead, cartilage has a more gel-like matrix with chondrocytes located in lacunae, which does not align with the characteristics provided in the question.

Conclusion

In summary, epithelial tissue is the only option that fits all the characteristics described in the question, such as cell arrangement, absence of extracellular matrix, and the specific morphology of the cells. All other options fail to meet these criteria and thus are not applicable.