The digestive juice that contains water electrolytes and starch splitting enzyme is

Options

A. gastric juice
B. succus entericus
C. saliva
D. pancreatic juice

Answer

To solve the question regarding which digestive juice contains water, electrolytes, and a starch-splitting enzyme, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Options**: The question provides four options:
- A) Gastric juice
- B) Succus entericus
- C) Saliva
- D) Pancreatic juice

2. **Understand the Composition of Each Option**:
- **Gastric Juice**: This is primarily composed of hydrochloric acid, pepsin, and intrinsic factor, but it does not contain a starch-splitting enzyme.
- **Succus Entericus**: This is the intestinal juice that contains various enzymes but is not primarily known for starch-splitting.
- **Saliva**: Saliva is produced by salivary glands and contains water, electrolytes (like sodium, potassium, chloride, and bicarbonate), and the enzyme salivary amylase, which specifically acts on starch.
- **Pancreatic Juice**: This contains various enzymes, including amylase, but it is not primarily known for its electrolyte content.

3. **Focus on Saliva**: Saliva is produced by three pairs of salivary glands (parotid, submandibular, and sublingual) and is known to contain:
- Water
- Electrolytes
- Salivary amylase (the starch-splitting enzyme)

4. **Conclusion**: Since saliva contains all three components mentioned in the question (water, electrolytes, and a starch-splitting enzyme), the correct answer is **C) Saliva**.

### Final Answer:
C) Saliva