Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Neuroendocrine > 8. Infratemporal Fossa and Temporomandibular Joint > Flashcards

8. Infratemporal Fossa and Temporomandibular Joint Flashcards

1
Q

What does the temporal region contain?

A

temporal and infratemporal fossae

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Where are the (1) temporal fossa and (2) infratemporal fossa found?

A
  1. superior to to zygomatic arch
  2. inferior to the zygomatic arch
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

bones of the infratemporal fossa

A
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

boundaries of the infratemporal fossa

A
  • lateral = ramus of mandible
  • anterior = maxilla
  • medial = lateral pterygoid plate
  • roof = sphenoid (greater wing)
  • posterior = tympanic plate & mastoid and styloid process
  • inferior = angle of mandible
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

contents of the infratemporal fossa

A
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

supplies external acoustic meatus, external tympanic membrane, and TMJ

A

deep auricular artery

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

supplies internal TM

A

anterior tympanic artery

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

enters madibular foramen and supplies mandible, mandibular teeth, chin, and mylohyoid m.

A

branches of inferior alveolar a.

[mylohyoid artery and mental artery]

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

enters cranium via foramen spinosum and supplies dura mater of lateral wlal, trigeminal ganglion, facial nerve, and geniculate ganglion, tympanic caity, and tensory tympani m.

A

middle meningeal artery

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

enters cranium via foramen ovale and supplies extracranial muscles of infratempora fossa, otic ganglion, and sphenoid bone

A

accessory meningeal artery

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

supplies temporalis m.

A

deep temporal artery

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

supplies pterygoid m.

A

pterygoid branches of maxillary artery

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

supplies TMJ and masseter muscle

A

masseteric artery

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

supplies bucca fat-pad, buccinator, and buccal oral mucosa

A

buccal artery

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

arteries from the mandibular part of the maxillary artery

A
  • deep auricular artery
  • anterior tympanic artery
  • inferior alveolar artery
  • middle meningeal artery
  • accessory meningeal artery
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

arteries from the pterygoid part of the maxillary artery

A
  • deep temporal artery
  • pterygoid branches
  • masseteric artery
  • buccal artery
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What nerve does the buccal artery run with?

A

buccal nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

branches of mandibular division of trigeminal nerve (V3)

A
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

branches of maxillary division of trigeminal n. (V2)

A
20
Q

Infratemporal fossa: relational anatomy

A
21
Q

Infratemporal fossa: relational neurology

A
22
Q

Fracture at the neck of the mandible can damage what structures?

A

V3 and otic ganglion

23
Q

Fracture at the ramus of the mandible can damage what structures?

A

inferior alveolar vessels/artery

24
Q

Fracture at the corpus can damage what structures?

A

inferior alveolar vessels/arteries

25
Q

variations in location of the maxillary artery in relation to other structures

A
  • in relation to lateral pterygoid m.
    • max a. can run lateral to muscle
    • max a. can run medial to muscle
  • in relation to nerves
    • medial to buccal nerve (but lateral to lingual n. & inferior alveolar n.)
    • medial to buccal and lingual n. (lateral to inferior alveolar n.)
    • medial to mandibular n. (V3)
26
Q

muscles of mastication & innervation

A
  • temporalis m.
  • masseter m.
  • lateral pterygoid m.
  • medial pterygoid m

[innervated by trigeminal n.]

27
Q

muscles of mastication involved in movement at what joint?

A

TMJ

28
Q

temporalis m. (superficial head)

A
  • origin: temporal fascia
  • insertion: cornoid process of mandible
  • innervation: deep temporal n. (CN V3)
  • action:
    • vertical fibers: elevate mandible
    • horizontal: retract mandle
    • unilateral: lateral movement of mandible
29
Q

temporalis m. (deep head)

A
  • origin: temporal fossa
  • insertion: cornoid process of mandible
  • innervation: deep temporal n. (CN V3)
  • action:
    • vertical fibers: elevate mandible
    • horizontal: retract mandle
    • unilateral: lateral movement of mandible
30
Q

lateral pterygoid (superior/upper head)

A
  • origin: greater wing of sphenoid bone
  • insertion: mandible
  • innervation: lateral pterygoid n.
  • action:
    • bilateral: protrudes mandible and opens mouth
    • unilateral: alternating actions, along with ipsilateral medial pterygoid; side-to-side movement necessary for grinding
31
Q

lateral pterygoid (inferior/lower head)

A
  • origin: lateral pterygoid plate
  • insertion: mandible
  • innervation: lateral pterygoid n.
  • action:
    • bilateral: protrudes mandible and opens mouth
    • unilateral: alternating actions, along with ipsilateral medial pterygoid; side-to-side movement necessary for grinding
32
Q

What opens the mandible?

A
33
Q

elevation of the mandible

A
  • temporalis m.
  • masseter m.
  • medial pterygoids m.
34
Q

depression of the mandible

A
  • lateral pterygoids m.
  • suprahyoid m.
  • infrahyoid mm.
35
Q

protrusion of the mandible

A
  • lateral pterygoids
  • masseter m.
  • medial pterygoids
36
Q

retrusion of the mandible

A
  • temporalis m.
  • masseter m.
37
Q

lateral movements of the mandible

A
  • ipsilateral temporalis m. and masseter m.
  • contralateral pterygoids
38
Q

What nerve runs close to the TMJ capsule?

A

facial n.

39
Q

jaw dislocation

A

excessive contraction of the lateral pterygoids may cause heads of mandible to dislocate anteriorly (anterior to articular tubercles)

appearance: mandible depressed & person unabe to close his/her mouth

*close proximity: facial nerve and auriculotemporal nerve

[if damage to auriculotemporal nerve, laxity and instability of the TMJ]

40
Q

innervation of TMJ

A
41
Q

medial pterygoid (superficial/external head)

A
  • origin: maxilla and palatine bone
  • insertion pterygoid rugosity on medial surface of mandibular angle
  • innervation: medial pterygoid n.
  • action: see below
42
Q

medial pterygoid m. (deep/internal head)

A
  • origin: medial surface of lateral pterygoid plate and pterygoid fossa
  • insertion: pterygoid rugosity on medial surface of mandibualr angle
  • innervation: medial pterygoid n.
  • action: see below
43
Q

mandibular nerve block

A

inject near the mandibular nerve (infratemporal fossa)

anesthesize: CN branches - auriculotemporal n., inferior alveolar n., lingual n., buccal
* alternative*: pass needle through mandibular nothc of the ramus of the mandible into infratemporal fossa

44
Q

inferior alveolar nerve block

A

inject around mandibular foramen (opening into mandibular canal)

anesthesizes inferior alveolar n. (CN V3)

*also anesthesize:; all mandibular teeth to the median plane, skin and mucus membrane of lower lip labial alveolar mucosa and gingiva, chin (mental n.)

45
Q

possible problem with inferior alveolar nerve block

A

injection of anesthetic into parotid gland or medial pterygoid muscle

causes inability to open mouth (pterygoid trismus)

Neuroendocrine (30 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions