In the mouth the saliva is mixed with the secretion from the buccal glands.

The buccal glands are located in the mucous membrane lining the cheeks and mouth.

The mucosa is supplied with secretions from the Buccal glands, which are arranged in superior and inferior groups.

In carnivores, the superior buccal gland is large and discrete: the Zygomatic gland.

(1978) Buccal glands of some aeolid nudibranchs (Ultrastructure and histochemistry).

Like the parotid and buccal glands, the labial glands are innervated by parasympathetic fibres that arise in the inferior salivatory nucleus, travel with the glossopharyngeal nerve and lesser petrosal nerve to the otic ganglion, where they synapse and then continue to the labial glands.