Select the incorrect option

Options

A. Bilirubin and biliverdin are the bile pigments
B. Emulsification is the breakdown of the fats into very small droplets
C. Rennin is a proteolytic enzyme found in the pancreatic juice of infants which helps in the digestion of milk protein
D. Mucus and bicarbonates protect mucosal epithelium from excoriation by highly conc. HCl

Answer

**Step-by-Step Solution:**

1. **Identify the Statements:**
- The first statement claims that bilirubin and biliverdin are bile pigments.
- The second statement describes emulsification as the breakdown of fats into very small droplets.
- The third statement states that renin is a proteolytic enzyme found in the pancreatic juice of infants, aiding in the digestion of milk protein.
- The fourth statement asserts that mucus and bicarbonate protect the mucosal epithelium from damage by concentrated hydrochloric acid.

2. **Analyze Each Statement:**
- **First Statement:** Bilirubin and biliverdin are indeed bile pigments. This statement is correct.
- **Second Statement:** Emulsification is the process of breaking down fats into smaller droplets, which aids in digestion. This statement is also correct.
- **Third Statement:** Renin is a proteolytic enzyme, but it is found in gastric juice, not pancreatic juice. This statement is incorrect.
- **Fourth Statement:** Mucus and bicarbonate do protect the mucosal epithelium from hydrochloric acid in the stomach. This statement is correct.

3. **Conclusion:**
- The incorrect option is the third statement: "Renin is a proteolytic enzyme found in the pancreatic juice of infants." It should state that renin is found in gastric juice.

**Final Answer:**
The incorrect option is the third statement.

---