## **Core Concept**
Parasympathetic stimulation of salivary glands primarily influences the acinar cells to secrete saliva. This process involves the activation of muscarinic receptors, which leads to an increase in intracellular calcium levels. This increase in calcium triggers the exocytosis of secretory granules containing various enzymes and proteins.

## **Why the Correct Answer is Right**
The correct answer, **.**, refers to the enzyme **lysozyme**. Lysozyme is an enzyme found in saliva that has antimicrobial properties. It works by breaking down the peptidoglycans in bacterial cell walls, ultimately leading to the lysis of these cells. Parasympathetic stimulation of the salivary glands results in the release of lysozyme from the acinar cells into the saliva.

## **Why Each Wrong Option is Incorrect**
- **Option A:** This option is incorrect because it does not correspond to lysozyme or any well-known salivary enzyme released in response to parasympathetic stimulation.
- **Option B:** This option is incorrect as it does not accurately represent the enzyme released by parasympathetic stimulation of salivary acinar cells.
- **Option D:** This option is incorrect because it does not correctly identify lysozyme or any other relevant enzyme released in response to parasympathetic stimulation.

## **Clinical Pearl / High-Yield Fact**
A key point to remember is that **lysozyme** in saliva has significant antimicrobial properties, helping protect the oral cavity from infections. This highlights the importance of saliva beyond just lubrication and digestion.

## **Correct Answer Line**
**Correct Answer: C. lysozyme.**