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25 Cards in this Set
- Front
- Back
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Where is the infratemporal fossa found?
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It is found inferior and deep to the zygomatic arch.
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What does it contain?
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It contains the muscles of mastication, their innervation and vasculature and other structures such as the mandibular nerve, inferior alveolar nerve, lingual nerve and chorda tympani.
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What lines the superior border of the infratemporal fossa and how does it communicate with the cranial cavity?
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It is lined by the infratemporal surface of the greater wing of the sphenoid bone, the infratemporal crest and a small portion of the temporal bone. It communicates via the foramen ovale and the foramen spinosum.
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What lines the inferior border?
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This is where the medial pterygoid muscle attaches to the mandible.
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What comprises the medial border?
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The lateral pterygoid plate of the sphenoid bone. The infratemporal fossa 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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The ramus and the coronoid process of the mandible comprise the lateral border.
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What is the anterior border?
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This is the posterior aspect of the maxilla to the inferior orbital fissure. The infratemporal fossa communicates with the orbit via the inferior orbital fissure.
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What is the posterior border comprised of?
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The 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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1. Temporalis muscle
2. Medial pterygoid muscle 3. Lateral pterygoid muscle 4. Maxillary artery and its branches 5. Pterygoid plexus of veins and the veins that drain into it. 6. Chorda tympani 7. Mandibular nerve and its branches including the muscular branches, inferior alveolar nerve and the lingual nerve. 8. Otic ganglion 9. Posterior superior alveolar nerve. |
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What is the pterygopalatine fossa?
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It is a small, pyramidal shaped space located between the maxilla, sphenoid and paaltine bones.
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What is the posterior border of the pterygopalatine fossa?
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The lateral pterygoid plate and the greater wing of the sphenoid bone.
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What is the anterior border comprised of?
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The posterior wall of the maxilla.
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What is the medial border?
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The vertical plate of the palatine bone.
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What is the lateral border?
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The pterygomaxillary fissure
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What comprises the roof of the pterygopalatine fossa?
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The greater wing of the sphenoid, the posterior part of the inferior orbital fissure and the orbital process of the palatine bone.
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What is the floor made up of?
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The pyramidal process of the palatine bone.
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Where is the Foramen rotundum located and what runs through it?
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I tis located in the greater wing of the sphenoid bone at the posterosuperior aspect of the fossa. The maxillary nerve travels through it.
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Where is the pterygoid canal located and what travels throguht it?
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It is at the base of the medial pterygoid plate just inferior to the foramen rotundum. the nerve of the pterygoid canal (which contains the fibers of the greater and the deep peterosal nerve).
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Where is the Sphenopalatine foramen located and what runs through it?
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It is located in the space between the sphenoid and the orbital processes of the palatine bone. It is found in the superior aspect of the medial wall of the fossa. The sphenopalatine artery and branches that emergefrom the pterygopalatine ganglion.
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Wher is the inerior orbital fissure located and what runs though it?
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It is located between the lesser wing of the sphenoid bone and the maxilla.The infraorbital nerve and the vessels travel through it.
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Where is the infraorbital groove, canal and foramen located and what travels through it?
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It is located int he infero-anterior aspect of the inferior orbital fissure. The infraorbital nerves and vessels travel through it.
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Where are the greater and lesser paltine canals located and what travels through them?
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They are in the base of the palatine bone. The greater and lesser palatine nerves and vessels travel in it.
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Where is the posterior superior alveolar foramen and what travels in it?
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It is on the lateral aspect (infratemporal surface) of the maxilla. The posterior superior alveolar nerve and vessels run through it.
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Where is the palatovaginal/pharyngeal canal located and what runs through it?
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It is located between the sphenoid bone and the palatine bone. It connects the nasopharynx with the pterygopaaltine fossa.
The pharyngeal nerve that supplies general somatic afferent and visceral efferent to the mucosa and glands of nasopharynx. |
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What are the contents of the pterygopalatine fossa?
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1. Maxillary artery and its pterygoid branches (posterior superior alveolar, infraorbital, greater palatine, pharyngeal, sphenopaaltine and the artery of the pterygopalatine canal.
2. Maxillary nerve 3. Zygomatic nerve and its branches - zygomaticotemporal and zygomaticofacial nerves 4. Posterior superior alveolar nerve 5. Pterygopalatine nerves 6. Greater and lesser palatine nerves 7. Posterior inferior nasal nerves 8. Nasopalatine nerve 9. Pharyngeal nerves 10. Nerve of the pterygoid canal. |
