Bcd Anatomy Test 3: Itf, Tmj

Front 1

boundaries of infratemporal region
Roof (how does it communicate above?)
Lateral
Medial
Anterior
Posterior
Inferior

Back 1

Roof: gap between zygomatic arch and infratemporal crest, and sphenoid bone medial to infratemporal crest; communicates above with temporal fossa

Lateral: ramus of mandible

Medial: lateral pterygoid plate and wall of pharynx

Anterior: maxilla

Posterior: Condyle, styloid process, carotid sheath

Inferior: open to neck and submandibular region

Front 2

principal contents of the infratemporal fossa

Back 2

medial and lateral pterygoid muscles, maxillary artery and branches of CN V3

Front 3

foramina & fissures associated with the ITF

Back 3

ovale
spinosum
posterior superior alveolar
mandibular

inferior orbital, pterygomaxillary fissures

Front 4

branches of the 1st part of the maxillary artery- from external carotid to inferior border of lateral pterygoid

Back 4

- anterior tympanic a.
- deep auricular a.
- inferior alveolar a.
- middle meningeal a.
- accessory meningeal a.

Front 5

branches of the 2nd part of the maxillary artery- lies on or deep to lateral pterygoid m.

Back 5

- deep temporal aa. (2)
- masseteric aa.
- pterygoid a.
- buccal a.

Front 6

branches of the 3rd party of the maxillary artery- after entering pterygomaxillary fissure

Back 6

- posterior superior alveolar aa.
- others...

Front 7

maxillary vein is located between these 2 muscles

collects blood from what?

Back 7

temporalis and pterygoid muscles

pterygoid plexus

Front 8

the maxillary vein communicates with the facial vein and cavernous sinus in the cranium through what 2 foramen

Back 8

foramen ovale and foramen lacerum

Front 9

maxillary vein combines with ___________ to form ______________

Back 9

superficial temporal vein

form retromandibular vein

Front 10

mandibular nerve distributes motor and sensory to these 5 areas

Back 10

- lower teeth & gums
- skin on temporal region, auricle, lower lip and lower face
- mucous membrane of the floor of the mouth
- anterior tongue
- masticatory muscles

Front 11

mandibular nerve gives motor branches to these muscles

Back 11

anterior belly of digastric
mylohyoid
masseter
temporalis
medial pterygoid
lateral pterygoid
tensor tympani
tensor veli palatini

Front 12

mandibular nerve gives these sensory branches

Back 12

1. buccal nerve
2. lingual nerve
3. inferior alveolar nerve
4. auriculotemporal nerve

Front 13

buccal nerve
- emerges ___________
- sensory to skin over ________ and ______, _____________

Back 13

between inferior and superior lateral pterygoid muscles

sensory to skin over buccinator & oral mucosa

Front 14

lingual nerve
- emerges _____ to the _____ head of lateral pterygoid m.
- provides sensory to these 3 things

Back 14

inferior to inferior head

to muscosa of anterior 2/3 of tongue
floor of mouth
lingual gingival

Front 15

inferior alveolar nerve enters the mandible at the ________
- gives sensory to ________
- gives off these 3 nerves

Back 15

mandibular foramen
lower teeth
gives off mental nerve, incisive nerve, nerve to mylohyoid

Front 16

the mental nerve gives sensory to :

incisive nerve gives sensory to:

Back 16

- skin overlying chin, lower lip, adjacent gingiva, mucosa of lower lip

- premolars, canines, incisors

Front 17

the auriculotemporal nerve:

- 2 roots that pass around the __________ artery before joining together
- sensory to part of ____, ____ and ____
- travels _____ to external auditory meatus and then upward across the _________ to be distributed with branches of the ___________ artery

Back 17

- middle meningeal artery
- sensory to part of ear and scalp, TMJ
- anterior to external auditory, upward across the zygomatic arch in front of the ear
with superficial temporal artery

Front 18

the posterior superior alveolar nerve is a branch of ______

-provides sensory to _______

- enters through PSA foramina in the ______

Back 18

maxillary division CN V2

- upper molar teeth

- in maxilla

Front 19

CN VII preganglionic fibers travel as this nerve _____ which synapses in the ______ ganglion then goes to these 2 glands and conveys taste from ______ 2/3 of tongue

Back 19

chorda tympani n.
submandibular ganglion

sublingual, submandibular gland
taste 2 anterior tongue 2/3

Front 20

chorda tympani n enters infratempora fossa via ______ located immpediately ________(ant/post) to this structure:

Back 20

petrotypanic fissue
posterior to the tegmen tympani

Front 21

hitchhikes on the lingual nerve
auriculotemporal nerve?

Back 21

- chorda tympani (CN VII)

- parasympathetics from IX

Front 22

parasympathetics from IX innervate what gland?

associated ganglion and located ____ to CN V3 just below ___________

Back 22

parotid gland

otic ganglion lcoated medial to CN v3 just below the foramen ovale

Front 23

3 components of preganglionic CNIX and 2 postganglionic

Back 23

glossopharyngeal nerve (CN IX)
tympanic plexus
lesser petrosal nerve

otic ganglion
auriculotemporal nerve hitch hike

Front 24

sympathetic component of CNIX stimulates these 2 things

Back 24

vasoconstriction and salivation (parotid duct)

Front 25

2 reasons ITF is important for dentist

Back 25

mandibular block injection site
tumors resulting in xerostomia, other deficits in orosensory function

Front 26

4 notable characteristics of the TMJ

Back 26

joint articular surfaces covered with fibrous connective tissue

cartilage deep to fibrous CT differs functionally from other growth or articular cartilages

complexity of motion (combo of translation & rotation)

synovial joint subdivided into 2 compartments by an articular disc

Front 27

4 bony components of the temporal bone associated with the TMJ

Back 27

mandibular fossa
articular tubercle
articular eminence
postglenoid tubercle/spine

Front 28

3 functions of synovial membrane of TMJ

Back 28

- production of synovial fluid
- phagocytosis
- rapid diffusion

Front 29

attachments of articular disc
medial & lateral:
posterior wall of capsule:
anterior wall of capsule:

Back 29

- medial and lateral poles of condyle via discal ligaments
- posterior wall of joint capsule via retrodiscal pad
- anterior wall of joint capsule & superor head of lateral pterygoid muscle

Front 30

where does the inferior lamina attach and what kind of fibers?

superior lamina attachment and fibers?

Back 30

inferior: collagenous fibers attaching to posterior ocndylar neck

superior: collagenous fibers+ elastic fibers
attaches to tympanic plate and mandibular fossa

Front 31

- lateral ligament of TMJ aka:

-thickening of:

- runs from ________ of condyle and ________ to ____________

- limits this movement:

Back 31

temporomandibular ligament
thickening of lateral wall
runs from lateral pole of condyle and condylar neck to articular tubercle
limits retrusive movements of the mandible

Front 32

sphenomandibular ligament runs from ________ of sphenoid to _________ of mandible

what else is special about it

Back 32

spine of sphenoid to lingula of mandible

embryological remnant of meckel's cartilage

Front 33

stylomandibular ligament runs from _______ to _______

thickened part of deep lamina of what fascia

Back 33

- runs from styloid process to mandibular angle

- thickened part of deep lamina of parotidomasseteric fascia

Front 34

attach articular disc to lateral and medial poles of the condyle

Back 34

discal ligaments

Front 35

function of inferior head of lateral pterygoid

superior head of lateral pterygoid

Back 35

- jaw opening (downward and forward pull)

- jaw closing to stabilize disc movement (upward and forward pull)

Front 36

innervation to TMJ

blood supply to TMJ

Back 36

auriculotemporal nerve (posterolateral) masseteric (anteromedial)

maxillary artery (deeper portion) and the superficial temporal artery

Front 37

movement that occurs in superior joint compartment

inferior joint compartment

Back 37

translation (gliding)

rotation (hinge)

Front 38

occurs in internal derangements of the TMJ

2 types?

Back 38

anterior disc displacement

"reducing" disc displacements (will return to normal if joint is disarticulated and disc can be recaptured)

"non-reducing" disc displacement. (no response to therapy)

Front 39

when disc of TMJ becomes distorted into a ball or knot anterior to the condyle, thereby greatly hindering anterior translation of condyle during opening

Back 39

deformed disks/ closed lock

Front 40

can cause disk perforations and where do they typically occur?

Back 40

- retrodiscal tissue trapped between condyle and articular eminence
- usually in bilaminar zone

Front 41

microtraumas can cause _______ in the articular disk, what can be used to detect them?

Back 41

adhesions
arthroscopy

Front 42

3 kinds of degenerative diseases of the TMJ

Back 42

- osteoarthritis
- rheumatoid arthritis
- ankylosis