Final answer:
The parotid glands produce serous, watery secretions that contain salivary amylase and are not mucus-like or viscous.
Step-by-step explanation:
The parotid glands are one of the major salivary glands in the human body and they produce serous secretions. These secretions are watery and contain the enzyme salivary amylase, which is involved in the initial digestion of carbohydrates. Unlike other salivary glands, the parotid glands do not produce mucus and thus, their secretion is not viscous but quite thin and enzyme-rich.