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35 Cards in this Set
- Front
- Back
Infratemporal Fossa Boundaries:
Anterior Wall |
posterior (infratemporal) surface of the maxilla
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Infratemporal Fossa Boundaries:
Posterior Wall |
-styloid process
-mastoid process -tympanic part of temporal bone |
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Infratemporal Fossa Boundaries:
Medial Wall |
lateral pterygoid plate of sphenoid bone
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Infratemporal Fossa Boundaries:
Lateral Wall |
ramus of the mandible
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1. greater wing of sphenoid (forms most of the roof
2. foramen ovale 3. foramen spinosum 4. mandibular fossa* 5. articular eminence* 6. infratemporal crest *on squamous part of temporal bone |
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1. neck
2. angle 3. ramus 4. body 5. mental foramen 6. mental protuberance 7. lingula 8. coronoid process 9. mandibular foramen 10. condyle 11. pterygoid fovea |
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1. mylohyoid groove
2. submandibular fossa 3. mylohyoid line 4. genial tubercules 5. sublingual fossa 6. mandibular incisure or notch |
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Temporalis
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I: deep temoporal n. (V3)
A: elevates mandible; posterior fibers retract the mandible; ipsilateral excursion |
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Masseter
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I: n. to masseter (V3)
A: elevates mandible; superficial fibers protrude the mandible; ipsilateral excursion |
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Lateral Pterygoid M.
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I: ns. to lateral pterygoid (V3)
A: protrudes mandible; translates mandibular condyle during depression; contralateral excursion *runs horizontally |
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Medial Pterygoid M.
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I: n. to medial pterygoid (V3)
A: elevates mandible; assists in protrusion; contralateral excursion *runs vertically |
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Infratemporal Fossa Boundaries:
Floor |
"sling" around mandible formed by the masseter and the medial pterygoid m.
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V3 Branches:
-Trunk Branches? -Anterior Div. Branches? -Posterior Div. Branches? |
-trunk: meningeal br.; medial pterygoid n.
-anterior div: masseteric n.; deep temporal ns.; lateral pterygoid n.; long buccal n. -post. div: auriculotemporal n.; lingual n.; inferior alveolar n. -> mylohyoid n. |
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Deep Temporal Ns.
-Type of Branch? -Innervate? -Fibers? |
-anterior div. br.
-to deep surface of temporalis m. -SA; BM |
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Ns. to the Lateral & Medial Pterygoid
-Type of Branch? -Innervate? -Fibers? |
-medial pterygoid n: trunk br.
-lateral pterygoid n.: anterior div. br. -to M&L pterygoid ms. -SA; BM |
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Masseteric N.
-Type of Branch? -Innervates? -Route -Fibers? |
-anterior div. br.
-to masseter -route: infratemporal fossa-> mandibular notch-> deep surface of masseter -SA; BM |
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Mylohyoid N.
-Type of Branch? -Innervates? -Route -Fibers? |
-off inf. alveolar n. from post. div. br.
-to mylohyoid and ant. belly of digastric -route: inf alv. n.-> mylohyoid groove-> mylohyoid m. -SA; BM |
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Long Buccal N.
-Type of Branch? -Innervates? -Route? -Fibers? |
-anterior div. br.
-to skin of the cheek; mucous mb of mouth and part of gums in same region -pierces buccinator but doesn't innervate it -SA |
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Lingual N.
-Type of Branch? -Innervates? -Fibers at Different Points? |
-post. div. br.
-to anterior 2/3 of tongue -SA->( chorda tympani joins)-> SA, SS to anterior 2/3 of tongue & VE-para/pre to submandibular ganglion-> (after submand. g.)-> SA, SS, VE-para/post to sublingual gland |
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Inferior Alveolar N.
-Type of Branch? -Innervates? -Route/Fibers at Different Points? |
-post div. br. (post. to lingual n.)
-to mandibular teeth; chin and lower lip area -SA, BM-> (mylohyoid leaves)-> only SA-> mandibular foramen-> mandibular canal-> (innervates mand. teeth)-> mental foramen-> becomes mental n. (innervates chin, lower lip, labial alveolar mucosa, mand. incisor teeth [incisive n.]) |
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Auriculotemporal N.
-Type of Branch? -Innervates? -Route? -Fibers? |
-post. div. br.
-to parotid gland; skin of temporal region -splits into 2 roots surrounding middle meningeal a.-> posteriorly thru infratemporal fossa-> around neck of mandible-> ascends to temporal region -SA; hitchhiking VE-para/post from otic ganglion (*after parotid gland, only SA) |
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Pterygomandibular Space
-Boundaries -Contents |
-boundaries: medial aspect of mand. ramus (laterally); medial pterygoid m. (medially); lateral pterygoid m (superiorly)
-contents: inferior alveolar n.; lingual n.; mylohyoid n.; inf. 1/2 of sphenomandibular lig |
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Inferior Alveolar Nerve (IAN) Block
-Region Involved? -Target? |
-multiple teeth in one quadrant
-target nerve as it travels on medial aspect of ramus before it enters mand. foramen |
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Buccal Nerve Block
-Region Involved? -Target? |
-buccal soft tissue in mand. molar region
-target buccal n. as it passes over ant. aspect of ramus |
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Mental N. Block
-Region Involved? |
buccal soft tissue anterior to mental foramen
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Pterygoid Venous Plexus
-Location? -Connected to? |
-located b/w temporalis and pterygoid ms.
-connected to: cavernous sinus; facial v (via deep facial v.); retromandibular v. (via maxillary vs.) |
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Maxillary Artery Branches:
1st (Retromandibular) Part |
-deep auricular a.
-anterior tympanic a. -middle meningeal a. -accessory meningeal a. -inferior alveolar a. |
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Deep Auricular A.
-Supplies? |
supplies external auditory meatus
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Anterior Tympanic A.
-Supplies? |
supplies tympanic mb.
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Middle Meningeal A.
-Route? -Supplies? |
-route: superiorly thru foramen spinosum surrounded by 2 roots of auriculotemporal n
-supplies dura mater and calvaria |
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Accessory Meningeal A.
-Route? -Supplies? |
-route: ascends thru foramen ovale
-supplies trigeminal ganglion and dura mater |
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Inferior Alveolar A.
-Route? -Supplies? |
-route: travels w/ inf. alveolar n. thru mandibular foramen and into mand. canal; terminates as mental a. and incisive a.
-supplies mandible, gums, teeth, floor of mouth |
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Maxillary Artery Branches:
2nd (Pterygoid) Part |
-deep temporal as.
-pterygoid as. -masseteric a. -buccal a. *these are all "muscular branches" |
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Deep Temporal As.
-Supplies? |
accompanies the deep temporal ns. to the deep surface of the temporalis
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Masseteric A.
-Route? -Supplies? |
-route: accompanies masseteric n. thru mand. notch
-supplies deep surface of masseter |