HN11 - Swallowing
Sep 5, 2026 · 9 min · 8 segments
- Speakers
- Robert WhitakerHost
Sep 5, 2026 · 9 min · 8 segments
The muscle involved here is the orbicularis oris, and its nerve supply is the facial nerve.
Once the food is in the mouth, there's going to be the production of saliva by all the various salivary glands.
In the case of the parotid gland, there's going to be stimulation of the glossopharyngeal nerve transmitted to the lesser petrosal nerve, to the otic ganglion, and carried to the parotid gland by the auriculotemporal nerve.
For the submandibular and sublingual glands, there will be stimulation by parasympathetic from the 7th cranial nerve to the cauda tympani, and then the cauda tympani will run on the lingual nerve as far as the submandibular ganglion, where then it is distributed from there after synapse by branches of the lingual nerve.
So thus the food is moistened, and in come to the action of the muscles of mastication.
The food is mechanically broken down by the teeth, and the main muscles of mastication, which are temporalis, masseter, and the medial and lateral pterygoids, all supplied by the mandibular division of the trigeminal, chew the food.
Any food that gets stuck in the vestibule is going to be eased out by the buccinator muscle, facial nerve, and possibly by the tip of the tongue, the hypoglossal nerve.
The muscle involved here is the orbicularis oris, and its nerve supply is the facial nerve.
Once the food is in the mouth, there's going to be the production of saliva by all the various salivary glands.
In the case of the parotid gland, there's going to be stimulation of the glossopharyngeal nerve transmitted to the lesser petrosal nerve, to the otic ganglion, and carried to the parotid gland by the auriculotemporal nerve.
For the submandibular and sublingual glands, there will be stimulation by parasympathetic from the 7th cranial nerve to the cauda tympani, and then the cauda tympani will run on the lingual nerve as far as the submandibular ganglion, where then it is distributed from there after synapse by branches of the lingual nerve.
So thus the food is moistened, and in come to the action of the muscles of mastication.
The food is mechanically broken down by the teeth, and the main muscles of mastication, which are temporalis, masseter, and the medial and lateral pterygoids, all supplied by the mandibular division of the trigeminal, chew the food.
Any food that gets stuck in the vestibule is going to be eased out by the buccinator muscle, facial nerve, and possibly by the tip of the tongue, the hypoglossal nerve.
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