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

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: Lecture 63: Infratemporal Fossa, Temporomandibular Joint, Submandibular and Otic Ganglia : True False Questions (L. Urbanik) : 1. The superior synovial cavity is a gliding joint that allows for protraction and retraction of the mandible. : 2. The inferior synovial cavity is a hinge joint that allows for elevation and depression of the mandible. : 3. The temporomandibular ligament limits lateral and posterior displacement of the mandible. : 4. The posterior fibers of the temporalis muscle can retract the mandible. : 5. The superior head of the lateral pterygoid muscle inserts into the capsule of the temporomandibular joint. : 6. The superficial temporal artery is not a content of the temporal fossa. : 7. The pterygomaxillary fissure transmits the sphenopalatine artery from the infratemporal fossa into the pterygopalatine fossa. : 8. The pterygoid plexus of veins communicates with the cavernous sinus by way of the emissary vein of Vesalius. : 9. The inferior alveolar nerve, proximal to the mandibular foramen, carries both GSA and SVE fibers. : 10. The lingual nerve is joined by the chorda tympani nerve carrying SVA and GVE fibers. : 11. The parasympathetic root of the otic ganglion is the lesser superficial petrosal nerve. : 12. Postganglionic axons leaving the superior cervical sympathetic ganglion travel as the internal carotid nerve. : True False Questions (Dr. Evey) : 1. The lesser superficial petrosal nerve is part of a somatic plexus whereas the buccal nerve is part of an autonomic trunk. : 2. The masseteric nerve passes through the mandibular notch. : 3. The posterior superior alveolar nerve branches from the maxillary nerve within the pterygopalatine fossa and enters the infratemporal fossa through the pterygomaxillary fissure. : 4. The buccal nerve passes the lateral aspect of the masseter muscle. : 5. The chorda tympani joins onto the inferior alveolar nerve before distributing to the anterior 2/3 of the tongue. : 6. Postganglionic fibers from the otic ganglion join onto; first the chorda tympani, and then the lingual nerve. : 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. : 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. : 9. The mouth is apt to be stuck open if the condyle of the mandible slips forward to the articular tubercle. : 10. The left body of the mandible is one on the most commonly broken bones in males. : 11. The inferior alveolar nerve contributes to the inferior dental plexus and then continues onto the face as the mental nerve. : 12. The nerve to the mylohyoid conveys GSE fibers to the mylohyoid muscle and SVE fibers to the anterior belly of the digastric. : 13. The buccal nerve conveys SVE and GSA fibers to the buccinator muscle. : 14. The middle meningeal artery passes from the infratemporal fossa through the foramen spinosum to then be in the anterior cranial fossa. : 15. The inferior alveolar nerve encircles the middle meningeal artery. : 16. The posterior superior alveolar artery does not enter the pterygopalatine fossa despite that the nerve of the same name is within this fossa. : 17. The medial pterygoid muscle arises from the medial pterygoid plate whereas the lateral pterygoid muscle arises from the lateral pterygoid plate. : 18. The hamulus is an inferior extension of the lateral pterygoid plate. : 19. The maxillary artery passes from the infratemporal fossa to the pterygopalatine fossa whereas the maxillary nerve does not enter the infratemporal fossa. : 20. The lingula of the mandible is a site of attachment for the pterygomandibular raphe. : 21. The hamulus of the medial pterygoid plate is a site of attachment for the sphenomandibular ligament. : 22. The groove for the mylohyoid nerve proceeds inferior and anterior from the mandibular foramen : 23. A lesion of the lesser superficial petrosal nerve is expected to cause ipsilateral salivatory deficits. : 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. : 25. A lesion of the auriculotemporal nerve just medial to the neck of the mandible is expected to cause a salivary deficit. : 26. The sympathetic root of the otic ganglion is derived from the external carotid plexus (middle meningeal plexus).

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