Temporal, Infratemporal, and Pterygopalatine Fossae Flashcards
Superior of Infratemporal Fossa
Greater wing of sphenoid
Foramen ovale and spinosum
Interior of Infratemporal Fossa
No anatomic floor
Ends where medial pterygoid attaches to the mandible
Lateral wall of Infratemporal Fossa
Ramus and coronoid process of mandible
Medial wall of Infratemporal Fossa
Lateral pterygoid plate
Superior constrictor m.
Palatine bone
Anterior wall of Infratemporal Fossa
Maxilla
Posterior wall of Infratemporal Fossa
No bony border
-Styloid process and condylar process of mandible
Sphenomandibular ligament located in the
infratemporal fossa
Contents of the Infratemporal Fossa: Foramen Spinosum
Middle meningeal artery
Middle meningeal vein
Meningeal nerve (from V3)
Contents of the Infratemporal Fossa: Mandibular Fossa
TMJ
Contents of the Infratemporal Fossa: Petrotympanic Fissure
Chorda tympani nerve (from VII)
Contents of the Infratemporal Fossa: Infraorbital Fissure
CN V2
Contents of the Infratemporal Fossa: Pterygomaxillary Fissure
Maxillary artery
Venous Drainage of the Infratemporal Fossa
pterygoid plexus
Major Contents of Pterygopalatine Fossa
Maxillary nerve (V2)
Maxillary artery
Pterygopalatine ganglion
Which border of infratemporal fossa has no anatomic floors
inferior
7 openings of pterygopalatine fossa
Foramen rotundum- middle cranial fossa pterygoid canal palatovaginal canal (nasopharynx) inferior orbital fissure palatine canal pterygomaxillary fissure spenopalatine foramen
Pterygopalatine Fossa structures
PSA n. (from V2)
PSA a. and v.
3rd part of maxillary a.
Pterygoid plexus
Foramen rotundum
Connects to the middle cranial fossa of the cranial cavity
Structures
Maxillary nerve (V2)
Pterygoid canal aka
Vidian canal
Palatovaginal or pharyngeal canal
Connects to the nasopharynx
Structures
Pharyngeal nerve (from V2)
Inferior orbital fissure
Connects to the floor of the orbit Structures Infraorbital nerves (from V2) ASA (from V2) MSA (from V2) Zygomatic nerve (from V2) Zygomaticotemporal n. Zygomaticofacial n. Infraorbital artery Inferior ophthalmic v.
Venous Drainage of the Pterygopalatine Fossa
pterygoid plexus
inferior opthalmic vein
Innervation of temporal fossa
Deep temporal nerves (from V3) Motor to temporalis Auriculotemporal nerve (from V3) Cutaneous Zygomaticotemporal nerve (from V2) Cutaneous
contents of temporal fossa
temporalis muscle
What nerve travels through the spenopalatine foramen?
Nasal
The spenopalatine foramen is superficial to the
Nasal cavity.
The emissary veins travel with V3 and ___ through the ___
Lesser petrosal nerve; foramen ovale
