temporal fossa Flashcards
exam 1
wedge-shaped space deep to the masseter muscle and underlying ramus of the mandible
infratemporal fossa
above the sygomatic arch, communicates with infratermporal fossa through the gap between the zygomatic arch and the more medial surface of the skull
temporal fossa
Boundaries of the temporal fossa
- superior: superior and inferior temporal lines
- anterior: frontal and sygomatic bones
- lateral: sygomatic arch
- inferior: infratermporal crest
nerves found on the surface of the temporal fossa?
CN V- auricolotemporal nerve
CN VII temporal and zygomatic br.
vasculature found in the termporal fossa?
superficial temporal artery and vein
borders of the infratemporal fossa
- superior : greater wing of sphenoid
- inferior: medial pterygoid
- anterior : maxilla
- posterior: tympanic plate, mastoid, styloid processes
- lateral: ramus of the mandible
- medial: lateral pterygoid plate
infratemporal fossa contains CN
- mandibular br. of V
- chorda tympani
muscles found in the infratermporal fossa
- temporalis muscle
- pterygoid muscles (medial and latera)
what else besides muscle and CN can you find i nthe infraatermporal fossa?
- otic ganglion
- maxillary arter
- ptyregoid venous plexus
primary muscles of mastication
- temporalis
- masseter
- lateral and medial pterygoid
masseter describe it and its innervation
two heads: superficial and deep
innervated by the masseteric br. of CN V3 through the mandibular notch
temporalis describe it and its innervation
used for infection tracking
innervation: deep temporal br. of CN V3 the mandibular n
medial pterygoid describe it and its innervation
attached to the medial surface of the lateral pterygoid and inserts at the pterygoid tuberosity on mandible
innervated by medial pterygoid br. of the CN V3
innervation
lateral pterygoid it and its innervation
attached to the lateral pterygoid on lateral surface and attaches tocondylar process/ tempromandibular joint (it has two heads: a superior head and a inferior)
innervated by the lateral pterygoid br. of CN V3
masticatory muscle sling
masseter and medial pterygoid
Maxillary artery arises from the __________ and it is divided into three part ____, _____ and _____
arises from external carotid
3 parts: mandibular, pterygoid and pterygopalatine
maxillary artery gives of 3 br.
- middle meningeal
- accessory meningeal
- inferior alveolar
maxillary artery is superficial to ______ in 2/3 of time
lateral pterygoid muscle
opthalmic arises from
internal carotid
termination of the maxillary artery
sphenopalatine
main passive support of the mandible
sphenomandibular ligament
insertion and attachment of the sphenomandibular lig.
spine of the sphenoid to lingula of mandible
most common dislocation of jaw
anterior
