temporal fossa

Question 1

temporal and infra temporal fossa

Answer 1

interconnected spaces
boundaries are bone and soft tissue

Question 2

what muscles does temporal and infra temporal fossa relate to

Answer 2

muscles of mastication
masseter lateral to ITF
medial and lateral pterygoid in ITF
temporales fils TF

Question 3

main bones involved in TF and ITF

Answer 3

temporal, zygomatic arch, sphenoid bones, maxilla, mandible

Question 4

temporal fossa covers

Answer 4

lateral surface of skull

Question 5

temporal fossa goes from where to where

Answer 5

from zygomatic process of frontal bone to surpamastoid crest of temporal bone

Question 6

major structure of temporal fossa

Answer 6

temporalis muscle

Question 7

temporalis muscle inv and blood supply

Answer 7

inv- deep temporal nerves from anterior trunk of mandibular nerve V3 (motor) and Zygomaticotemporal of zygomatic nerve V2 (sensory)
blood supply- deep temporal arteries and middle temporal arteries

Question 8

deep temporal artery is from

Answer 8

maxillary artery

Question 9

middle temporal artery is from

Answer 9

superficial temporal artery, passes under muscle and superiorly into deep surface

Question 10

infratemporal fossa is _______ to temporal fossa

Answer 10

inferior

Question 11

infra temporal fossa is positioned

Answer 11

between ramus of mandible laterally and wall of pharynx medially

Question 12

roof of the infra temporal fossa

Answer 12

inferior surface of greater wing of sphenoid and temporal bone

Question 13

contents of root of ITF

Answer 13

contains foramen spinosum, foramen ovale, petrotympanic fissure

Question 14

lateral wall of ITF

Answer 14

medial surface of mandible

Question 15

medial wall of ITF

Answer 15

to the anterior- lateral plate of pterygoid process and pterygomaxillary fissure (allows structures to pass from ITF to pterygopalatine fossa)
to the posterior- pharynx and 2 muscles of soft palate (tensor and elevator palatine)

Question 16

major contents of ITF

Answer 16

sphenomandibular ligament, medial and lateral pterygoid muscles, maxillary artery, mandibular nerve V3, branches of facial nerve (VII), glossopharyngeal nerve (IX), pterygoid plexus of veins

Question 17

sphenomandibular ligament

Answer 17

extracapsular for TMJ, from spine of sphenoid (lingual near foramen)

Question 18

maxillary artery supplies

Answer 18

largest branch off ECA
blood supply to nasal cavity, roof and lateral wall oral cavity, dura mater, all teeth

Question 19

maxillary artery branches

Answer 19

first part- middle meningeal, inferior alveolar
second part- deep temporal, masseteric, buccal, pterygoid branches

Question 20

branches off anterior trunk of mandibular nerve

Answer 20

buccal- mostly sensory
massesteric- motor
deep temporal- motor
nerve to lateral pterygoid

Question 21

buccal nerve sensory to

Answer 21

off anterior trunk, mostly sensory, some motor to lateral pterygoid
sensory to adjacent skin and oral mucosa, buccal, gingiva, lower molars, anesthesia to “long buccal” (lower posterior teeth)

Question 22

buccal nerve moves through

Answer 22

tendon of temporalis and continues to cheek, lateral buccinator

Question 23

masseteric nerve

Answer 23

supplies masseter muscle, passes over lateral pterygoid through mandibular notch

Question 24

deep temporal nerve

Answer 24

supplies temporalis muscle via infra temporal crest via temporal fossa

Question 25

nerve to lateral pterygoid

Answer 25

two possible sources- off anterior trunk or from its buccal branch passes into deep surface of lateral pterygoid

Question 26

branches off posterior trunk of mandibular nerve

Answer 26

all sensory, auriculotemporal, lingual, inferior alveolar

Question 27

auriculotemporal nerve supplies

Answer 27

sensation over large area of temple, sensory external ear, auditory meatus, tympanic membrane, TMJ has post ganglionic parasympathetic nerves for glossopharyngeal (IX) to parotid

Question 28

auriculotemporal nerve enters through

Answer 28

foramen spinosum

Question 29

lingual nerve

Answer 29

sensory nerve from V3 general sensation anterior 2/3 of tongue, oral mucosa floor of mouth, lingual gingiva lower teeth

Question 30

lingual nerve enters

Answer 30

oral cavity at posterior attachment of mylohyoid and superior constrictor of pharynx tongue on lateral surface of hyoglossus muscle inferior to last molar, easily palpated and traumatized

Question 31

inferior alveolar nerve supples

Answer 31

major sensory nerve in lower one motor branch to mylohyoid and anterior digastric prior to entering canal

Question 31

inferior alveolar passes

Answer 31

between sphenomandibular ligament and ramus of mandible and enters canal via mandibular foramen

Question 32

branches of inferior alveolar nerve

Answer 32

incisive nerve and mental nerve

Question 33

nerves prior to branches of trunk

Answer 33

meningeal branch via foramen spinosum- sensory to dura mater and mastoid nerve to medial pterygoid- branches to tensor veli palatini and tensor tympani

Question 34

chorda tympani

Answer 34

branch of facial nerve (VII), close to condyle parasympathetic inv to salivary glands, taste anterior 2/3 tongue sensory to tongue, related to ear and TMJ (petrotympanic fissure)

Question 35

lesser petrosal

Answer 35

branch of glossopharyngeal nerve (IX) parasympathetic to parotid

Question 36

what two nerves join with branches of mandibular nerve V3 in the ITF

Answer 36

chorda tympani and lesser petrosal

Question 37

pterygoid plexus of veins resides

Answer 37

between pterygoid muscles, lateral pterygoid, and temporalis

Question 38

pterygoid plexus of veins drains

Answer 38

drains area associated with maxillary artery drains nasal cavity, all teeth, oral cavity, muscles of ITF, paranasal sinuses, nasopharynx

Question 39

infection can spread into pterygoid plexus of veins via

Answer 39

emissary veins

Question 40

lack of valves in pterygoid plexus of veins may allow

Answer 40

anesthetic back flow into cranial cavity

Question 41

mastoid process

Answer 41

at the base of skull area of attachment for muscle- SCM, posterior digastric, etc. has air cells (sinuses)