Which one of the following pairs of kind of cells and their function is not correctly matched?

Options

A. Parietal cells - secrete hydrochloric acid and intrinsic factor
B. Ameloblasts - secrete dentine
C. Zymogen cells- secrete pepsinogen
D. Paneth cells - secrete enzymes

Answer

To determine which pair of cells and their functions is not correctly matched, we will analyze each option provided in the question.

### Step-by-Step Solution:

1. **Identify the first option: Parietal Cells**
- **Location:** Parietal cells are located in the stomach.
- **Function:** They produce hydrochloric acid (HCl) and intrinsic factor.
- **Conclusion:** This option is correctly matched because parietal cells do indeed produce HCl, which helps in digestion, and intrinsic factor, which is necessary for the absorption of vitamin B12.

2. **Identify the second option: Ameloblasts**
- **Function:** The option states that ameloblasts secrete dentine.
- **Conclusion:** This is not correctly matched. Ameloblasts are responsible for the formation of enamel, not dentine. Dentine is secreted by odontoblasts. Therefore, this option is the correct answer to the question as it is incorrectly matched.

3. **Identify the third option: Zymogen Cells**
- **Function:** The option states that zymogen cells secrete pepsinogen.
- **Conclusion:** This is correctly matched. Zymogen cells (also known as gastric chief cells) do secrete pepsinogen, which is an inactive precursor of the enzyme pepsin, involved in protein digestion.

4. **Identify the fourth option: Paneth Cells**
- **Function:** The option states that Paneth cells secrete enzymes.
- **Conclusion:** This is also correctly matched. Paneth cells are found in the intestinal epithelium and secrete antimicrobial proteins and enzymes such as lysozyme, which help in maintaining gut health.

### Final Conclusion:
The only pair that is not correctly matched is **ameloblasts and their function of secreting dentine**. Ameloblasts actually secrete enamel, while dentine is secreted by odontoblasts.