The three classifications of epithelial cells are: cuboidal, columnar, and _____?

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Multiple Choice

The three classifications of epithelial cells are: cuboidal, columnar, and _____?

Explanation:
Epithelial tissue is classified by how the cells look in shape: squamous (flat), cuboidal (cube-like), and columnar (tall). The missing term is squamous—the flat, scale-like cells. Their thin, flat form allows quick diffusion and a smooth lining in places such as blood vessel walls and lung air sacs. Cuboidal and columnar describe thicker, taller cells involved more in secretion and absorption. The other options aren’t basic shapes: glandular refers to gland-forming epithelium, while stratified and pseudostratified describe layering, not shape.

Epithelial tissue is classified by how the cells look in shape: squamous (flat), cuboidal (cube-like), and columnar (tall). The missing term is squamous—the flat, scale-like cells. Their thin, flat form allows quick diffusion and a smooth lining in places such as blood vessel walls and lung air sacs. Cuboidal and columnar describe thicker, taller cells involved more in secretion and absorption. The other options aren’t basic shapes: glandular refers to gland-forming epithelium, while stratified and pseudostratified describe layering, not shape.

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