Infratemporal Fossa Flashcards Preview

ESA 4 - Head and Neck > Infratemporal Fossa > Flashcards

Flashcards in Infratemporal Fossa Deck (5)
1

What muscles does the infratemporal fossa contain?

Medial and lateral pterygoids
Inferior fibres of temporalis

2

Nerves in the infratemporal fossa?

Mandibular - enters via foramen ovale, gives rise to branches
Chorda tympani - follows course of lingual nerve to tongue
Optic ganglion - fibres hitchhike on auriculotemporal nerve to parotid

3

Vasculature in the infratemporal fossa?

Maxillary artery - gives rise to MMA, travels into cranial cavity via foramen spinosum

Superficial temporal artery

Pterygoid venous plexus - drains the eye, connected to cavernous sinus

Maxillary vein and middle meninges like vein

4

Openings into the infratemporal fossa

Connects to cranial cavity superiorly, via foramen ovale and foramen spinosum

Connects to pterygopalatine fossa via pterygopalatine fissure

Inferior orbital fissure

5

What are the boundaries?

Lateral - Ramus of mandible
Medial - Lateral pterygoid plate of the sphenoid
Anterior - posterior surface of the maxilla
Posterior - carotid sheath
Floor - medial pterygoids
Roof - greater wing of sphenoid bone