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26 Cards in this Set
- Front
- Back
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Where is the infratemporal fossa found?
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Inferior and deep to the zygomatic arch
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What are the superior borders of the infratemporal fossa?
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Infratemporal surface of the:
-Greater wing of the sphenoid bone -Infratemporal crest -Small portion of the temporal bone |
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What does the superior portion of the infratemporal fossa communicate with?
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Cranial cavity via the foramen ovale and foramen spinosum
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What is the inferior border of the infratemporal fossa?
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Where the medial pterygoid attaches to the mandible
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What is the medial border of the infratemporal fossa and what does it communicate with?
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Medial Border: Lateral Pterygoid plate of the sphenoid bone
Communicates: with the pterygopalatine fossa via the pterygomaxillary fissure |
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What is the lateral border of the infratemporal fossa?
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Ramus of the mandible and the coronoid process of the mandible
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What is the anterior border of the infratemporal fossa and what does it communicate with:
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Anterior border: Posterior aspect of the maxilla to the inferior orbital fissure
Communicates: with the orbit via the inferior orbital fissure |
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What is the posterior border of the infratemporal fossa and what does it communicate with?
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Posterior border is continuous with the structures that surround the styloid process including the stylomandibular ligament.
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What are the contents of the infratemporal fossa?
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- Temporalis muscle
- Medial pterygoid muscle - Lateral pterygoid muscle - Maxillary artery and its branches - Pterygoid plexus of veins and veins that drain into it - Chorda tympani nerve - Mandibular nerve and its branches including muscular branches, inferior alveolar nerve and lingual nerve - Otic ganglion - Posterior superior alveolar nerve |
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Where is the pterygopalatine fossa located?
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The pterygopalatine fossa is a small, pyramidal shaped space located between the maxilla, sphenoid and palatine bones.
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What is the posterior border of the pterygopalatine fossa?
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Lateral pterygoid process and greater wing of the sphenoid bone
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What is the anterior border of the pterygopalatine fossa?
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Posterior wall of the maxilla
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What is the medial border of the pterygopalatine fossa?
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Vertical plate of the palatine bone
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What is the lateral border of the pterygopalatine fossa?
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Pterygomaxillary fissure
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What is the roof of the pterygopalatine fossa?
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Greater wing of the sphenoid bone
Posterior part of the inferior orbital fissure Orbital process of the palatine bone |
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What is the floor of the pterygopalatine fossa?
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Pyramidal process of the palatine bone
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Where is the foramen rotundum located with respect to the pterygopalatine fossa and what travels through it?
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Location: Greater wing of the sphenoid bone at the posterosuperior aspect of the fossa
Traveling through it: Maxillary nerve |
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Where is the pterygoid canal located with respect to the pterygopalatine fossa and what travels in it?
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Location: Base of the medial pterygoid plate just inferior to the foramen rotundum
Traveling in it: Nerve of the pterygoid canal (contains fibers of the greater petrosal nerve and deep petrosal nerve) |
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Where is the sphenopalatine foramen located with respect to the pterygopalatine fossa and what travels in it?
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Location: The space between the sphenoid and orbital processes of the palatine bone. It is fund in the superior aspect of the medial wall of the fossa
Traveling in it: Sphenopalatine artery and branches that emerge from the pterygopalatine ganglion |
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Where is the inferior orbital fissure located with respect to the pterygopalatine fossa and what travels in it?
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Location: Cleft between the lesser wing of the sphenoid bone and the maxilla
Traveling in it: Infraorbital nerve and vessels |
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Where is the infraorbital groove, canal, and foramen with respect to the pterygopalatine fossa and what travels in it?
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Location: Infero-anterior aspect of the inferior orbital fissure
Traveling in it: Infraorbital nerve and vessels |
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Where are the greater and lesser palatine canals located with respect to the pterygopalatine fossa and what travels in it?
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Location: Base of the palatine bone
Traveling in it: Greater and lesser palatine nerves and vessels |
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Where is the posterior superior alveolar foramen located with respect to the pterygopalatine fossa and what travels in it?
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Location: Lateral aspect (infratemporal surface) of the maxilla
Traveling in it: Posterior superior alveolar nerve and vessels |
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Where is the palatovaginal or pharyngeal canal located with respect to the pterygopalatine fossa and what travels in it?
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Location: Between the sphenoid bone and the palatine bone. Connects with the nasopharynx with the pterygopalatine fossa
Traveling in it: The pharyngeal nerve that supplies general somatic afferent with visceral afferent to the mucosa and glands of the nasopharynx. |
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What are the contents of the pterygopalatine fossa?
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- Maxillary artery and its pterygoid branches
- Infraorbital artery - Greater (and if present lesser) palatine artery - Maxillary nerve - Zygomatic nerve and its branches - Posterior superior alveolar nerve - Pterygopalatine ganglion - Pterygopalatine nerves - Greater and lesser palatine nerve - Posterior inferior nasal nerves - Nasopalatine nerve - Pharyngeal nerves - Nerve of the pterygoid canal |
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What are the pterygoid branches of the maxillary artery associated with the pterygopalatine fossa?
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Posterior superior alveolar artery
Infraorbital artery Greater palatine artery Pharyngeal artery Sphenopalatine artery Artery of the pterygopalatine canal |
