Epithelial tissue quizzes and free worksheets | Kenhub - Free Printable

The image shows a worksheet titled "Simple Epithelium Subtypes" from Kenhub, a resource for learning anatomy. The task appears to be identifying and labeling the different subtypes of simple epithelium based on their cellular shapes and arrangements.

Step-by-step Analysis:

In histology (the study of tissues), simple epithelium consists of a single layer of cells. There are three main subtypes based on cell shape:

1. Simple Squamous Epithelium
2. Simple Cuboidal Epithelium
3. Simple Columnar Epithelium

Let’s analyze the images in the worksheet:

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1. Simple Squamous Epithelium

- Cell Shape: Flat, thin, scale-like.
- Appearance: Cells appear as thin sheets with nuclei near the center.
- Function: Diffusion, filtration (e.g., alveoli in lungs).
- Color in Image: Green (flat, tile-like appearance).

✔ Identify all green blocks → These represent simple squamous epithelium.

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2. Simple Cuboidal Epithelium

- Cell Shape: Cube-shaped (equal height and width).
- Appearance: Cells look like small cubes stacked together.
- Function: Secretion and absorption (e.g., kidney tubules).
- Color in Image: Pinkish-beige, with rounded edges.

✔ Identify the pink blocks that are cube-shaped → These represent simple cuboidal epithelium.

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3. Simple Columnar Epithelium

- Cell Shape: Tall and column-like (height > width).
- Appearance: Cells are elongated, often with nuclei near the base.
- Function: Absorption and secretion (e.g., lining of the digestive tract).
- Color in Image: Pinkish-beige, but taller than cuboidal.

✔ Identify the pink blocks that are tall and rectangular → These represent simple columnar epithelium.

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Observations from the Image:

- There are three green blocks (all flat) → Simple Squamous
- There are several pink blocks, some short and cube-like, others taller → need to distinguish between cuboidal and columnar.
- Based on standard representation:
- Short, cube-shaped pink cells → Simple Cuboidal
- Tall, column-shaped pink cells → Simple Columnar

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Final Answer:

Label the three blank boxes at the bottom as follows:

1. Simple Squamous Epithelium
→ Corresponds to the green blocks.

2. Simple Cuboidal Epithelium
→ Corresponds to the short, cube-shaped pink blocks.

3. Simple Columnar Epithelium
→ Corresponds to the tall, column-shaped pink blocks.

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Summary:

| Color | Cell Shape | Type |
|------|------------|------|
| Green | Flat, tile-like | Simple Squamous |
| Pink (cube-shaped) | Cube-like | Simple Cuboidal |
| Pink (tall) | Column-like | Simple Columnar |

✔ So, the correct labels from left to right are:
1. Simple Squamous Epithelium
2. Simple Cuboidal Epithelium
3. Simple Columnar Epithelium

This matches standard anatomical classification and visual cues in the diagram.