Saliva

Definition

Saliva is a watery substance secreted by the salivary glands in the mouth. It plays a crucial role in the initial stages of digestion by breaking down carbohydrates and aiding in swallowing.

5 Must Know Facts For Your Next Test

1. Saliva contains the enzyme amylase, which begins the breakdown of starches into sugars.
2. It helps lubricate food, making it easier to chew and swallow.
3. Saliva has antibacterial properties that help maintain oral health.
4. The production of saliva can be stimulated by the sight, smell, or thought of food.
5. On average, an adult produces about 1 to 1.5 liters of saliva per day.

Review Questions

• What enzyme in saliva is responsible for breaking down starches?
• How does saliva contribute to oral health?
• Approximately how much saliva does an adult produce daily?

Related terms

Amylase:

An enzyme found in saliva and pancreatic fluid that converts starch into sugars.

Salivary Glands:

Glands located in and around the mouth that produce saliva.

Deglutition: The act or process of swallowing.