The types of cells that form glandular epithelium that secrete enzymes and buffers in the pancreas and salivary glands are :

Options

A. simple squamous epithelium
B. simple cuboidal epithelium
C. stratified cuboidal epithelium
D. transitional epithelium

Answer

To answer the question about the types of cells that form glandular epithelium in the pancreas and salivary glands, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Glandular Epithelium**:
- Glandular epithelium is a type of epithelial tissue that is specialized for secretion. It consists of cells that can produce and release substances such as enzymes, hormones, and mucus.

2. **Identifying the Types of Epithelial Cells**:
- The question provides four options: simple squamous epithelium, simple cuboidal epithelium, stratified cuboidal epithelium, and transitional epithelium. We need to evaluate which type is responsible for the secretion in the pancreas and salivary glands.

3. **Evaluating Each Option**:
- **Simple Squamous Epithelium**:
- This type consists of flat cells and is primarily involved in processes requiring diffusion, such as lining blood vessels and the heart. It does not secrete enzymes or buffers, so this option is incorrect.

- **Simple Cuboidal Epithelium**:
- This type consists of cube-shaped cells. It is involved in secretion and absorption and is found in glandular tissues. Since both the pancreas and salivary glands secrete substances (enzymes and buffers), this option is correct.

- **Stratified Cuboidal Epithelium**:
- This type consists of multiple layers of cuboidal cells and primarily serves a protective function. It does not play a role in secretion in glands, making this option incorrect.

- **Transitional Epithelium**:
- This type is specialized to stretch and is found in the urinary bladder. It does not have a role in secretion, so this option is also incorrect.

4. **Conclusion**:
- After evaluating all the options, the correct answer is **simple cuboidal epithelium**, as it forms the glandular epithelium that secretes enzymes and buffers in the pancreas and salivary glands.

### Final Answer:
The types of cells that form glandular epithelium that secrete enzymes and buffers in the pancreas and salivary glands are **simple cuboidal epithelium**.