animal tissues: epithelial

Question

Which epithelial tissue type is specialized for diffusion and lines alveoli of lungs?

RankGuru · Accepted Answer

1. **Simple Squamous Epithelium**: Formed by a single, thin layer of flattened cells with irregular boundaries.
2. **Specialization**: Because it is extremely thin, it allows for the rapid passage of substances via **diffusion** or filtration.
3. **Distribution**: Found in the walls of blood vessels and the **alveoli of the lungs**, where efficient gas exchange is critical.
4. **Others**:
   - **Stratified Squamous**: Multiple layers for protection (skin).
   - **Cuboidal**: For secretion and absorption (kidney tubules).
   - **Ciliated Columnar**: To move particles/mucus (bronchioles, fallopian tubes).

Rank Guru

animal tissues: epithelial

Select the correct option: