Select the part of the animal body with its correct tissue type.

Options

A. Columnar Epithelium - Blood vessel
B. Cuboidal Epithelium - Stomach lining
C. Squamous Epithelium - Lung air sac
D. Ciliated Epithelium - Food pipe

Answer

To solve the question "Select the part of the animal body with its correct tissue type," we need to analyze each option provided and identify the correct tissue type associated with the specified body part.

### Step-by-Step Solution:

1. **Option 1: Columnar Epithelium - Blood Vessels**
- Columnar epithelium consists of tall, column-shaped cells. It is primarily found in the lining of the digestive tract, including the stomach and intestines.
- **Conclusion**: Blood vessels are lined with endothelial cells, not columnar epithelium. Therefore, this option is **incorrect**.

2. **Option 2: Cuboidal Epithelium - Stomach Lining**
- Cuboidal epithelium consists of cube-shaped cells and is typically found in glands and ducts, such as those in the kidneys and salivary glands.
- **Conclusion**: The stomach lining is made up of columnar epithelium, not cuboidal epithelium. Thus, this option is **incorrect**.

3. **Option 3: Squamous Epithelium - Lungs Air Sac**
- Squamous epithelium is made up of thin, flat cells and is found in areas where diffusion occurs, such as in the alveoli of the lungs and the lining of blood vessels.
- **Conclusion**: The air sacs (alveoli) in the lungs are indeed lined with squamous epithelium. Therefore, this option is **correct**.

4. **Option 4: Ciliated Epithelium - Food Pipe**
- Ciliated epithelium contains hair-like structures called cilia and is found in the respiratory tract and fallopian tubes.
- **Conclusion**: The food pipe (esophagus) is lined with stratified squamous epithelium, not ciliated epithelium. Thus, this option is **incorrect**.

### Final Answer:
The only correct pairing is **Option 3: Squamous Epithelium - Lungs Air Sac**.