Question

in observing epithelial cells under a microscope, the cells are arranged in a single layer and look tall and narrow, and the nucleus is located close to the basement membrane of the cell. the specimen is what type of epithelial tissue?
a columnar
b stratified
c squamous
d transitional

Explanation:

• Columnar epithelial tissue: Has cells arranged in a single layer (simple), tall and narrow shape, and nucleus close to basement membrane.
• Stratified epithelial tissue: Has multiple cell layers, not single - layer as described.
• Squamous epithelial tissue: Cells are flat (squamous), not tall and narrow.
• Transitional epithelial tissue: Changes shape (from cuboidal to squamous) with organ stretching, not described here.

Answer:

A. columnar