Which of the following are pairs of salivary glands?

The correct answer identifies the prominent salivary glands commonly found in various animals, including humans. The parotid gland is located near the ear and is the largest salivary gland, primarily responsible for producing saliva during the process of chewing and swallowing. The mandibular (or submandibular) gland, situated beneath the jaw, produces a mixed secretion of saliva that aids in digestion. The sublingual gland, located under the tongue, primarily secretes mucous saliva, contributing to the lubrication of food and aiding in swallowing.

Recognizing these three glands as pairs is crucial for understanding how the salivary system functions in aiding digestion and maintaining oral health. The presence of specific salivary glands and their anatomical positions is a fundamental topic in animal science, as it connects to larger themes like digestion, health, and physiology in animals.