Which nerve provides parasympathetic secretomotor to the submandibular gland via hitchhiking with the lingual nerve?

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Multiple Choice

Which nerve provides parasympathetic secretomotor to the submandibular gland via hitchhiking with the lingual nerve?

Explanation:
Parasympathetic secretomotor to the submandibular gland comes from preganglionic fibers traveling with the chorda tympani, a branch of the facial nerve. These parasympathetic fibers join the lingual nerve in the infratemporal region and synapse in the submandibular ganglion. After synapsing, the postganglionic fibers hitchhike along the lingual nerve to reach the submandibular (and sublingual) glands, stimulating saliva production. Other pathways—such as the greater petrosal nerve to the pterygopalatine ganglion for lacrimal/nasal mucosa, or the auriculotemporal route for the parotid via the otic ganglion—don’t supply the submandibular gland via hitchhiking with the lingual nerve.

Parasympathetic secretomotor to the submandibular gland comes from preganglionic fibers traveling with the chorda tympani, a branch of the facial nerve. These parasympathetic fibers join the lingual nerve in the infratemporal region and synapse in the submandibular ganglion. After synapsing, the postganglionic fibers hitchhike along the lingual nerve to reach the submandibular (and sublingual) glands, stimulating saliva production. Other pathways—such as the greater petrosal nerve to the pterygopalatine ganglion for lacrimal/nasal mucosa, or the auriculotemporal route for the parotid via the otic ganglion—don’t supply the submandibular gland via hitchhiking with the lingual nerve.

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