Brainscape's Knowledge GenomeTM

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


See full index

Head and Neck > 12) TMJ and Infratemporal Fossa > Flashcards

12) TMJ and Infratemporal Fossa Flashcards

1
Q

What are the articulations in the temporomandibular joint?

A

Condyle of mandible
Mandibular fossa
Articular tubercle (temporal bone)

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

What separates the articular surfaces?

A

Articular disk

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

What covers the articular surfaces?

A

Fibrocartilage

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

What are the 3 extra-capsular ligaments of the TMJ?

A

Lateral (temporomandibular)
Stylomandibular
Sphenomandibular

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

What muscles cause elevation of the TMJ?

A

Temporal, masseter and medial pterygoid

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

What muscles cause depression of the TMJ?

A

Lateral pterygoid and supra/infrahyoid muscles (mainly gravity)

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

What muscle causes protrusion of the TMJ?

A

Lateral pterygoid

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

What muscle causes retrusion of the TMJ?

A

Temporal

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

What muscles cause lateral movements of the TMJ?

A

Temporal on same side, pterygoids on opposite side and masseter

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

What is the nerve supply to the muscles of mastication?

A

Mandibular branch of trigeminal

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

Describe a TMJ dislocation:

A

Anterior causing head of mandible to move out of mandibular fossa (anterior to articular tubercle)

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

What can be damaged in a TMJ dislocation?

A

Facial and auriculotemporal nerves

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

What can cause a TMJ dislocation?

A

Blow to side of face, yawning or taking a large bite

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

What other TMJ disorders are there?

A

Bruxism (teeth grinding)
Osteoarthritis
Inter-articular disk derangement

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

How do TMJ disorders usually present?

A

Pain in region of auriculotemporal nerve (V3)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What are the muscular contents of the infratemporal fossa?

A

Temporal, lateral and medial pterygoid muscles

17
Q

What are the vascular contents of the infratemporal fossa?

A

Maxillary artery and vein

Pterygoid venous plexus

18
Q

What are the nervous contents of the infratemporal fossa?

A

Mandibular nerve: inferior alveolar, lingual, buccal nerves
Chorda tympani
Otic ganglion

19
Q

What pathology can occur in the infratemporal fossa?

A

Risk of cavernous sinus thrombosis due to communication with pterygoid plexus
Extradural haematoma
Isolated infections

20
Q

What is the clinical relevance of the infratemporal fossa?

A

Used as site for mandibular nerve blocks

21
Q

Describe the location of the infratemporal fossa:

A

Deep and inferior to zygomatic arch and deep to ramus of mandible

Head and Neck (17 decks)

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