Term
| The infratemporal fossa is deep to... |
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Definition
| the masseter muscle and ramus of the mandible |
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Term
| Which ligament attaches to the lingula of the mandible? |
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Definition
| The sphenomandibular ligament |
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Term
| What muscles accomplish protrusion of the mandible? |
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Definition
| Lateral pterygoid assisted by medial pterygoid |
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Term
| What muscles accomplish retraction of the TMJ? |
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Definition
| posterior fibers of temporalis, deep part of masseter, geniohyoid and digastric |
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Term
| What muscles elevate the mandible? |
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Definition
| Temporalis, masseter, medial pterygoid |
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Term
| What muscles depress the mandible? |
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Definition
| Digastric, geniohyoid and mylohyoid |
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Term
| In the TMJ, much forward movement occurs in the _____ portion of the joint, and hinge movement occurs in the ______ portion. |
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Definition
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Term
| What muscle inserts into the TMJ joint capsule at the region of the articular disc? |
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Definition
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Term
| In bilateral TMJ dislocation, where do the heads of the mandibles lie? |
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Definition
| In front of the tubercles |
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Term
| Reduction of a dislocated TMJ is accomplished by pushing on the jaw in what direction(s)? |
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Definition
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Term
| Injury to which nerve is associated with traumatic dislocation of the TMJ? |
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Definition
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Term
| Care must be taken during TMJ surgery to branches of the ______ nerve overlying it, and the branches of the ________ nerve that enter the posterior part of the joint |
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Definition
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Term
| TMJ clicking and popping is caused by what? |
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Definition
| delayed movement of the articular disc followed by sudden movement |
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Term
| What 3 ligaments are associated with the TMJ? |
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Definition
| Sphenomandibular, stylomandibular, lateral |
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Term
| Where does the sphenomandibular ligament attach? |
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Definition
| spine of the sphenoid to the lingula of the ramus of the mandible |
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Term
| Where does the stylomandibular ligament attach? |
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Definition
| styloid process of the temporal bone to the angle of the mandible |
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Term
| Where does the lateral ligament attach? |
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Definition
| margin of the articular tubercle to neck of the mandible |
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Term
| Masseter muscle: O&I? Innervation? Blood supply? Function? |
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Definition
| Zygomatic arch to lateral surface of mandible, masseteric nerve (V3), masseteric artery (maxillary), powerful elevation of mandible |
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Term
| What are the contents of the temporal fossa? |
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Definition
| Temporalis muscle, zygomaticotemporal branches of V2 |
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Term
| Temporalis muscle: O&I? Innervation? Blood supply? Function? |
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Definition
| Temporal fossa, anterior surface of coronoid process and ramus of mandible. Deep temporal nerves from V3. Deep temporal arteries (maxillary) and middle temporal (superficial temporal). Powerful elevator and retractor, also side-to-side movement. |
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Term
| What forms the roof of the infratemporal fossa? What opens are there? |
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Definition
| The inferior surfaces of the greater wing of the sphenoid and temporal bones. Foramen spinosum and ovale, pterygotympanic fissure |
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Term
| What is the lateral wall of the infratemporal fossa? |
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Definition
| The medial surface of the ramus of the mandible |
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Term
| What forms the medial wall of the infratemporal fossa? |
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Definition
| The lateral plate of the pterygoid process and pharynx (posteriorly) |
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Term
| What forms the anterior wall of the infratemporal fossa? What foramen does it contain, and where does the upper part open to? |
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Definition
| The posterior surface of the maxilla. Contains the alveolar foramen and the upper part opens as the inferior orbital fissure. |
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Term
| What are the two smaller muscles found in the infratemporal fossa? |
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Definition
| Levator veli palatini and tensor veli palatini |
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Term
| What is the medial opening to/from the infratemporal fossa? |
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Definition
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Term
| What is the fissure that opens to/from the superior infratemporal fossa? |
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Definition
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Term
| Medial pterygoid: O&I? Innervation? Actions? |
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Definition
| Deep: medial surface of the lateral plate of the pterygoid process, superficial: tuberosity of maxilla and palatine bone. I: medial surface of the mandible near the angle. Nerve to medial pterygoid (V3). Elevates, assists with protrusion. |
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Term
| Medial pterygoid passes deep to which ligament? |
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Definition
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Term
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Definition
| Upper head: sphenoid bone lateral to foramens ovale and spinosum. Lower head: Lateral surface of lateral plate of pterygoid process, passes between heads of medial pterygoid. I: Neck of the mandible and articular capsule |
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Term
| Lateral pterygoid - innervation? Actions? |
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Definition
| Nerve to lateral pterygoid (V3), protrusion and pulls articular disc anteriorly |
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Term
| When lateral and medial pterygoid muscles both contract on the same side, what happens? |
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Definition
| chin moves to opposite side |
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Term
| What does V3 provide motor innervation to? |
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Definition
| Muscles of mastication, tensor tympani, tensor veli palatini |
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Term
| The nerve branches that innervate tensor veli palatini and tensor tympani come from... |
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Definition
| nerve to medial pterygoid (V3) |
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Term
| What are the branches from the anterior trunk of V3? |
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Definition
| buccal, masseteric, and deep temporal nerves, nerve lateral pterygoid (all motor except buccal) |
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Term
| What are the branches of the posterior trunk of V3? |
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Definition
| Auriculotemporal, lingual, inferior alveolar |
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Term
| Where does the lingual nerve enter the oral cavity? |
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Definition
| On the medial surface of the mandible, inferior to the last molar tooth |
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Term
| Which nerve may penetrate the temporalis tendon, running inferiorly, to emerge superficially? |
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Definition
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Term
| Which nerve may penetrate the sphenomandibular ligament near its attachment to the lingula? |
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Definition
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Term
| The first part of the maxillary artery gives off which branches? |
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Definition
| Inferior alveolar artery and middle meningeal artery (also deep auricular, anterior tympanic, and accessory meningeal arteries). |
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Term
| The second part of the maxillary artery, in the region of the lateral pterygoid muscles, gives off which branches? |
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Definition
| deep temporal, masseteric ,buccal, and pterygoid branches, which travel with the branches of V3 |
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Term
| The maxillary artery arises within the _______ gland, passes between the bone of the ________ and the ________ ligament. |
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Definition
| Parotid, mandible, sphenomandibular |
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Term
| Veins draining regions supplied by the maxillary artery are joined by emissary veins that connect which important structures? |
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Definition
| Cavernous sinus, pterygoid plexus and orbit (via inferior opthamic veins) |
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Term
| What are the medial and posterior walls of the pterygopalatine fossa? |
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Definition
| Lateral surface of the palatine bone, and parts of sphenoid (posterior and roof) |
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Term
| What are the openings into/out of the pterygopalatine fossa? Where do they go? |
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Definition
| Inferior orbital fissure (floor of orbit), pterygomaxillary fissure (infratemporal fossa), sphenopalatine foramen (nasal cavity), foramen rotundum (middle cranial fossa), palataovaginal canal (nasopharynx), pterygoid canal (middle cranial fossa), palatine canal (roof of oral cavity). (alveolar foramen is closely associated) |
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Term
| From an anterior view of the sphenoid bone, what is the relationship of the foramen rotundum to the pterygoid canal? |
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Definition
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Term
| Part of the pterygoid canal is in the cartilage of the... |
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Definition
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Term
| What are the main nerves from V2 that innervate the nasal cavity? |
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Definition
| Sphenopalatine, nasopalatine (medial), posterior inferior and posterior superior lateral nerves |
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Term
| The maxillary artery branches from the ______ artery at the level of the __________. |
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Definition
| External carotid, neck of the mandible |
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Term
| The maxillary artery enters the pterygopalatine fossa through the... |
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Definition
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Term
| How does the maxillary artery lie in relation to the ganglion in the pterygopalatine fossa |
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Definition
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Term
| The infraorbital artery arises from ______, give rise to _______ that supplies the maxillary teeth |
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Definition
| maxillar, anterior alveolar artery |
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Term
| Which branch of maxillary artery travels through the alveolar foramen with the nerve to the maxillary teeth? |
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Definition
| Posterior superior alveolar artery |
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Term
| The maxillary artery gives rise to the _________ artery, which enters the ______ canal to supply the hard palate. This branch gives rise to the _______ artery which supplies the soft palate. |
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Definition
| Greater palatine, palatine canal, lesser palatine |
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Term
| Which artery traverses the incisive foramen to the anterior septal wall? |
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Definition
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Term
| The ________ artery passes through the ________ canal with a nerve supplying the nasal cavity, sphenoid sinus, and pharyngotympanic tube . |
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Definition
| pharyngeal, palatovaginal, (with the pharyngeal nerve) |
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