Temporal and Infratemporal fossae and the Maxillary Artery Flashcards
What is the superior and posterior borders of the temporal fossa?
Superior and inferior temporal lines
What is the anterior border of the temporal fossa?
Frontal process of zygomatic bone & zygomatic process of frontal bone
What is the inferior border of temporal fossa?
Infratemporal crest
What is the floor of the temporal fossa?
Frontal, parietal, temporal and greater wing of sphenoid bone (includes PTERION)
What is the roof of the temporal fossa
Formed by temporal fascia
What is the temporal fossa mainly occupied by?
Upper portion of temporalis
What is the lateral border of the infratemporal fossa?
Ramus of mandible
What is the medial border of infratemporal fossa?
Lateral pterygoid plate of sphenoid bone
Anterior border of infratemporal fossa
Posterior aspect of maxilla
Posterior border of infratemporal fossa
Tympanic plate, mastoid & styloid process
Superior border of infratemporal fossa
Infratemporal crest of sphenoid bone
Inferior border of infratemporal fossa
Angle of mandible
What nerves run through the infratemporal fossa?
CNV3
IAN
Lingual
Buccal
Chorda tympani
Otic ganglion
What are the contents of the infratemporal fossa? (excluding nerves)
Maxillary artery
Pterygoid venous plexus
Inferior part of temporalis
Lateral and medial pterygoid muscles
What is the clinical term for the space where you would anaesthetise for IAN block?
Pterygomandibular space
Space in infratemporal fossa between medial pterygoids and mandible.
What nerve encircles the middle meningeal artery?
Auriculotemporal (branch of CNV3)
Where does the maxillary artery arise?
Posterior to the neck of the mandible
What are the 3 parts of the maxillary artery?
1st - mandibular
2nd - pterygoid
3rd - pterygopalatine parts
What are the main branches of the mandibular part of maxillary artery?
Middle meningeal - supplies dura
Inferior alveolar artery - enters mandibular foramen with IAN
What are the main branches of the pterygoid part of the maxillary artery?
Anterior and posterior deep temporal arteries
Masseteric artery - passes through mandibular notch
Buccal artery
What are the main branches of the pterygopalatine part of the maxillary artery?
Superior alveolar artery
Where are the TMJ and the MOM located?
Temporal and infratemporal fossa