Final answer:
Saliva from the salivary glands contains amylase, which breaks down starch and glycogen into smaller sugar molecules. Lipase, another enzyme in saliva, helps break down lipids or fats.
Step-by-step explanation:
The salivary glands produce saliva, which contains several enzymes that aid in digestion. One of these enzymes is amylase, which breaks down the polysaccharides starch and glycogen into smaller sugar molecules like glucose and maltose. Another enzyme found in saliva is lipase, which helps break down lipids or fats. These enzymes play a crucial role in initiating the chemical digestion of macromolecules in the mouth.