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Re: Lecture 69: Pterygopalatine Fossa, Ganglion, and Maxillary Nerve Distribution - True False

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Posted by lae2 on December 09, 2021 at 14:24:57:

In Reply to: Re: Lecture 69: Pterygopalatine Fossa, Ganglion, and Maxillary Nerve Distribution - True False posted by Alexis on December 09, 2021 at 13:28:11:

: Lecture 69: Pterygopalatine Fossa, Ganglion, and Maxillary Nerve Distribution - True False Answers
: 1. The pharyngeal plexus derived from the vagus nerve supplies SVE fibers to the middle constrictor whereas the pharyngeal plexus derived from the glossopharyngeal nerve provides GVA fibers to pharyngeal mucosa lining the middle constrictor.

: - true Correct. Gag reflex.

: 2. All three of the constrictor muscles receive motor innervation as SVE from the vagus whereas the mucosa on their internal surfaces have GSA for nasopharynx, GVA glossopharyngeal for oropharynx, and GVA vagus for hypopharynx.

: - true Correct.

: 3. Referred pain from laryngeal or pharyngeal cancers may occur at the external auditory meatus. This reflects the activities of the great auricular nerve and of the lesser occipital nerve.

: - false ⇒ referred pain to back of head and oral cavity. False. Cervical plexus does not refer from cranial nerves.

: 4. The tympanic branch of the glossopharyngeal nerve passes through the mastoid canaliculus.

: - false ⇒ goes through inferior tympanic canaliculus. Correct.

: 5. The zygomaticotemporal nerve leaves the lateral wall of the orbit superior to the exit of the zygomaticofacial nerve.

: - true - Correct.

: 6. The SVA component of the greater superficial petrosal nerve distributes along all the branches of the maxillary nerve that occur within the pterygopalatine fossa.

: - true - Incorrect. Only to regions of taste. Hard and soft palate.

: 7. Parasympathetic postganglionic fibers, but not postganglionic sympathetic fibers, distribute with the lateral posterior nasal nerves to the turbinates.

: - true. Incorrect. Sympathetic fibers go everywhere that parasympathetic fibers go.

: 8. The recurrent tympanic nerve, a branch of the chorda tympani, enters the tympanic cavity to provide SVE innervation to salpingopharyngeus.

: - false ⇒ recurrent tympanic nerve is branch of glossopharyngeal. Correct

: 9. The superior alveolar processes receive GSA innervation by the superior posterior, middle, and anterior alveolar branches of the maxillary and infraorbital nerves.

: - true. Correct.

: 10. The mucosa of the maxillary sinus receives postganglionic fibers having cell bodies in the ciliary ganglion.

: - false ⇒ ciliary ganglion is only in the eye, mucosa of maxillary sinus is from pterygopalatine ganglion. Correct.




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