The salivatory nuclei are associated with which cranial nerves?

The salivatory nuclei are associated with which cranial nerves?

• A. V and VII
• B. VII and IX
• C. IX and X
• D. II and VIII

Answer: (B)

Salivatory nuclei are brainstem parasympathetic centers that give rise to preganglionic fibers destined for salivary glands. There are two: the superior salivatory nucleus, located in the pons, sends parasympathetic fibers with the facial nerve to glands supplied by VII (submandibular and sublingual glands, and lacrimal/nasal glands via the pterygopalatine ganglion); and the inferior salivatory nucleus, in the medulla, sends fibers with the glossopharyngeal nerve to the parotid gland via the otic ganglion. Because these pathways are tied to VII and IX, the salivatory nuclei are associated with cranial nerves VII and IX. The other options don’t fit because they involve different functions or pathways (trigeminal is primarily sensory/motor, and the vagus has its own parasympathetic system not originating from these salivatory centers).

Salivatory nuclei are brainstem parasympathetic centers that give rise to preganglionic fibers destined for salivary glands. There are two: the superior salivatory nucleus, located in the pons, sends parasympathetic fibers with the facial nerve to glands supplied by VII (submandibular and sublingual glands, and lacrimal/nasal glands via the pterygopalatine ganglion); and the inferior salivatory nucleus, in the medulla, sends fibers with the glossopharyngeal nerve to the parotid gland via the otic ganglion. Because these pathways are tied to VII and IX, the salivatory nuclei are associated with cranial nerves VII and IX. The other options don’t fit because they involve different functions or pathways (trigeminal is primarily sensory/motor, and the vagus has its own parasympathetic system not originating from these salivatory centers).