A tissue examined under the microscope exhibits the following characteristics: cells found on the internal surface of the stomach, no extracellular matrix, cells are tall and thin, and no blood vessels are present in the tissue. What type of tissue is this?

Rationale

Epithelial tissue is the correct type.

This tissue type is most commonly found lining the body's cavities, such as the stomach. Epithelial cells are closely packed together with no extracellular matrix, often adopting a tall and thin shape to form a protective barrier. It's also characteristic for epithelial tissue to lack blood vessels, receiving nourishment through diffusion instead.

A (Epithelial) CORRECT

Epithelial tissue lines the surfaces of the body and forms a barrier. Cells are closely packed together, often with a tall and thin shape. A lack of extracellular matrix and blood vessels is characteristic for this tissue type, which aligns with the given description.

B (Connective) YOUR ANSWER

Connective tissue primarily serves to connect and support other tissues. It consists of a large amount of extracellular matrix and usually contains blood vessels. The absence of these characteristics in the described tissue rules out the possibility of it being connective tissue.

C (Muscle) YOUR ANSWER

Muscle tissue is specialized for contraction and movement. It can be found throughout the body, including in organs like the heart and muscles attached to bones. But unlike the described tissue, it is not typically tall and thin or found lining the stomach.

D (Cartilage) YOUR ANSWER

Cartilage is a type of connective tissue that provides flexible support to various parts of the body. It consists of an extracellular matrix filled with collagen and elastic fibers. However, the described tissue doesn't contain an extracellular matrix, which eliminates cartilage as an option.

Conclusion

The cells described are tall and thin, found lining the stomach, lack an extracellular matrix, and do not include blood vessels—all characteristic features of epithelial tissue. Therefore, the described tissue can be identified as epithelial. The other choices—connective, muscle, and cartilage—do not fit the description, as they possess different characteristics and serve different functions within the body.

A tissue examined under the microscope exhibits the following characteristics: cells found on the internal surface of the stomach, no extracellular matrix, cells are tall and thin, and no blood vessels are present in the tissue. What type of tissue is this?

Epithelial tissue is the correct type.

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