What is saliva?

Saliva is defined as the liquid produced in your mouth, which plays several crucial roles in the digestive process and oral health. It is composed mainly of water, but also contains enzymes, electrolytes, mucus, and antibacterial compounds. The primary function of saliva is to initiate digestion by breaking down carbohydrates and helping to lubricate food for easier swallowing. Additionally, saliva helps maintain oral hygiene by washing away food particles and containing antibacterial substances that reduce the risk of infection.

Each of the other options describes something entirely different. Tree sap refers to a viscous fluid that circulates through trees and provides nutrients; minerals are natural inorganic substances found in the earth; and a painful throat condition is unrelated to any substance produced in the mouth. Understanding the specific characteristics and functions of saliva helps contextualize its significance in both digestion and overall health.