Which type of epithelium is composed of multiple layers, including an apical layer containing tall, slender cells?

Question

Which type of epithelium is composed of multiple layers, including an apical layer containing tall, slender cells?

BlackTom AI · Accepted Answer

This question asks about the type of epithelium that has multiple layers and features an apical layer with tall, slender cells.
Option 1: simple columnar. This is a single-layer epithelium where tall, column-like cells all contact the basement membrane. It does not have multiple layers, so it cannot match the description of a multilayered arrangement.
Option 2: simple squamous. This is a single layer of flat cells, ideal for diffusion and filtration, not a multilayered tissue with tall apical cells. It clearly does not fit the clue about an apical layer of tall cells.
Option 3: pseudostratified columnar. While it can appear stratified because nuclei are at different levels, every cell contacts the basement membrane, and the apical surface often appears ciliated but the defining feature isn’t multiple true layers with tall slender cells; this option is a common distractor when the term “pseudostratified” is misinterpreted as multilayered. It doesn’t strictly satisfy the description of a multi-layered arrangement with a distinct apical tall-cell layer.
Option 4: stratified columnar. This epithelium consists of more than one cell layer, and the apical layer commonly contains tall, slender columnar cells, matching the given description of a multilayer structure with tall apical cells.
In summary, the description emphasizes both a multilayer organization and a distinctive apical layer of tall cells, which aligns with stratified columnar epithelia, while the other options either describe single-layer tissues or fail to emphasize the apical tall-cell layer. By elimination, the multilayered with tall apical cells characteristic points us toward the stratified columnar arrangement.

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Which type of epithelium is composed of multiple layers, including an apical layer containing tall, slender cells?

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