Question

Salivary glands release a liquid called
saliva, which helps to break food down.​​

one explanation why its chemical

Answer 1

Saliva is considered a chemical breakdown aid in digestion primarily because it contains enzymes that initiate the process of breaking down food at a molecular level. The main enzyme present in saliva is amylase, which specifically targets starches and carbohydrates. When food enters the mouth, amylase begins to hydrolyze (break down) complex carbohydrates into simpler sugars. Additionally, saliva contains other substances such as lysozyme and antibodies that help in the antimicrobial process, and mucus that facilitates swallowing. The chemical composition of saliva thus plays a crucial role in the initial stages of digestion, preparing food for further breakdown in the stomach and small intestine.