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Re: Lecture 63: Infratemporal Fossa, Temporomandibular Joint, Submandibular and Otic Ganglia - True False

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Posted by lae2 on December 09, 2021 at 15:47:19:

In Reply to: Re: Lecture 63: Infratemporal Fossa, Temporomandibular Joint, Submandibular and Otic Ganglia - True False posted by Alexis on December 09, 2021 at 12:39:14:

: Lecture 63
: 1. The lesser superficial petrosal nerve is part of a somatic plexus whereas the buccal nerve is part of an autonomic trunk.

: - false ⇒ LSPN from tympanic plexus. Correct. Goofy question.

: 2. The masseteric nerve passes through the mandibular notch.

: - true. Correct.

: 3. The posterior superior alveolar nerve branches from the maxillary nerve within the pterygopalatine fossa and enters the infratemporal fossa through the pterygomaxillary fissure.

: - true. Correct

: 4. The buccal nerve passes the lateral aspect of the masseter muscle.

: - false. Correct

: 5. The chorda tympani joins onto the inferior alveolar nerve before distributing to the anterior 2/3 of the tongue.

: - false. Correct.

: 6. Postganglionic fibers from the otic ganglion join onto; first the chorda tympani, and then the lingual nerve.

: - false ⇒ otic ganglion to parotid (so auriculotemporal). Correct. Auriculotemporal and then facial.

: 7. A lesion of the chorda tympani within the infratemporal fossa is expected to decrease sensitivity of touch to the posterior 1/3 of the tongue as well as decrease lacrimation.

: - false ⇒ anterior aspect. Correct. no effect on lacrimation.

: 8. A lesion of the lingual nerve within the floor of the mouth is expected to disrupt both taste and touch to the anterior 2/3 of the tongue.

: - true. Correct.

: 9. The mouth is apt to be stuck open if the condyle of the mandible slips forward to the articular tubercle.

: - true. Correct. Transverse axis move anterior.

: 10. The left body of the mandible is one on the most commonly broken bones in males.

: - true. Correct.

: 11. The inferior alveolar nerve contributes to the inferior dental plexus and then continues onto the face as the mental nerve.

: - true. Correct.

: 12. The nerve to the mylohyoid conveys GSE fibers to the mylohyoid muscle and SVE fibers to the anterior belly of the digastric.

: - false ⇒ should both be SVE fibers. Correct.

: 13. The buccal nerve conveys SVE and GSA fibers to the buccinator muscle.

: - true. False. GSA only. SVE is facial.

: 14. The middle meningeal artery passes from the infratemporal fossa through the foramen spinosum to then be in the anterior cranial fossa.

: - false ⇒ middle cranial fossa. Correct.

: 15. The inferior alveolar nerve encircles the middle meningeal artery.

: - false ⇒ auriculotemporal encircles MMA. Correct.

: 16. The posterior superior alveolar artery does not enter the pterygopalatine fossa despite that the nerve of the same name is within this fossa.

: - true. Correct.

: 17. The medial pterygoid muscle arises from the medial pterygoid plate whereas the lateral pterygoid muscle arises from the lateral pterygoid plate.

: - false ⇒ medial pterygoid comes from LTP. Correct.

: 18. The hamulus is an inferior extension of the lateral pterygoid plate.

: - false ⇒ medial pterygoid plate. Correct.

: 19. The maxillary artery passes from the infratemporal fossa to the pterygopalatine fossa whereas the maxillary nerve does not enter the infratemporal fossa.

: - false. Incorrect! This is true.

: 20. The lingula of the mandible is a site of attachment for the pterygomandibular raphe.

: - false. Correct.

: 21. The hamulus of the medial pterygoid plate is a site of attachment for the sphenomandibular ligament.

: - false ⇒ pterygomandibular ligament. Correct.

: 22. The groove for the mylohyoid nerve proceeds inferior and anterior from the mandibular foramen

: - true. Correct.

: 23. A lesion of the lesser superficial petrosal nerve is expected to cause ipsilateral salivatory deficits.

: - true. Correct.

: 24. A lesion of the lingual nerve at the foramen ovale is expected to disrupt touch (GSA) but not taste (SVA) to the anterior 2/3 of the tongue.

: - true. Correct.

: 25. A lesion of the auriculotemporal nerve just medial to the neck of the mandible is expected to cause a salivary deficit.

: - true. Correct. Communicating GVE are lateral to neck.

: 26. The sympathetic root of the otic ganglion is derived from the external carotid plexus (middle meningeal plexus).

: - true. Correct. From middle meningeal plexus.




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