Ptyalin in secreted by ___________ and work in ___________medium.

Options

A. Stomach , acidic
B. Salvary gland, 6.8-7
C. Pancreas, alkaline
D. Bile, alkaline.

Answer

To answer the question "Ptyalin is secreted by ___________ and works in ___________ medium," we can follow these steps:

### Step 1: Identify the source of ptyalin
Ptyalin is an enzyme that is specifically secreted by the **salivary glands**. This enzyme is present in saliva, which is produced by these glands.

### Step 2: Determine the medium in which ptyalin works
Ptyalin functions optimally in a **slightly acidic to neutral medium**, with a pH range of approximately **6.8 to 7**. This means that it works best in a medium that is neither highly acidic nor alkaline.

### Final Answer
Thus, the complete answer to the question is:
Ptyalin is secreted by **salivary glands** and works in a **6.8 to 7 medium**.

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