Ptyalin is secreted by________

Options

A. Stomach
B. Salivary gland,
C. Pancreas
D. Bile

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about the secretion of ptyalin, which is an enzyme. We need to identify which organ or gland is responsible for its secretion.

2. **Identifying Ptyalin**: Ptyalin is also known as salivary amylase. It is an enzyme that helps in the digestion of carbohydrates, specifically starch.

3. **Locating the Source**: Salivary amylase (ptyalin) is secreted in the mouth. The glands responsible for this secretion are the salivary glands.

4. **Reviewing Other Options**:
- The stomach primarily secretes gastric juices, which include pepsin and hydrochloric acid, but not ptyalin.
- The pancreas secretes digestive enzymes like lipase and proteases, but not ptyalin.
- Bile is produced by the liver and stored in the gallbladder; it aids in fat digestion but does not secrete ptyalin.

5. **Conclusion**: Since ptyalin is a salivary enzyme, the correct answer is that it is secreted by the salivary glands.

**Final Answer**: Ptyalin is secreted by the salivary gland.

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