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Anatomy > 41. Infratemporal fossa and TMJ > Flashcards

41. Infratemporal fossa and TMJ Flashcards

1
Q

Describe the infratemporal fossa

A

Space between skull and ramus of mandible

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2
Q

Anterior boundary of infratemporal fossa?

A

Posterior surface of maxilla

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3
Q

Posterior boundary of infratemporal fossa?

A

Styloid process

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4
Q

Superior boundary of infratemporal fossa?

A

Infratemporal surface of greater wing of sphenoid

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5
Q

Medial boundary of infratemporal fossa?

A

Lateral pterygoid plate

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6
Q

Lateral boundary of infratemporal fossa?

A

Ramus of mandible

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7
Q 
Name the:
Muscles x2
Nerve(s) x3
Artery
Venous plexus
That run in the infratemporal fossa
A 
Lateral and medial pterygoid
CNV3
Chorda tympani
Otic ganglion
Maxillary artery
Pterygoid venous plexus
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8
Q

Action of medial pterygoid?

A

Assists in elevating the mandible

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9
Q

Action of lateral pterygoid?

A

Pulls the neck of the mandible forward

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10
Q

Innervation of the pterygoids?

A

CNV3

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11
Q

Name the nerves in the anterior division of CNV3? (5)

A

x2 deep temporal
Masseteric
Nerve to lateral pterygoid
Buccal

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12
Q

Name the nerves in the posterior division of CNV3? (4)

A

Lingual
Inferior alveolar
Myhlohyoid
Auriculotemporal

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13
Q

What are the pre-division branches of CNV3? (3)

A

Meningeal
Nerve to medial pterygoid
Communicating branch

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14
Q

What are the branches of the maxillary artery that go to muscles? (3)

A

Deep temporal
Masseteric
Pterygoid

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15
Q

Between the 2 heads of which muscle does the maxillary artery pass to go into the pterygomaxillary fissue?

A

Lateral pterygoid

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16
Q

What branch does the maxillary artery give off after passing into the pterygomaxillary fissure?

A

Posterior superior alveolar branch

17
Q

What are the 3 parts of the maxillary artery?

A

Mandibular
Pterygoid
Pterygopalantine

18
Q

What are the ptergopalantine branches of the maxillary artery? (3)

A 
Posterior superior alveolar
Infraorbital
Descending palatine
Artery of pterygoid canal
Sphenopalantine
19
Q

Does the pterygoid venous plexus surround the medial or lateral pterygoid?

20
Q

Into which vein does the ptergyoid venous plexus drain?

21
Q

What nerve does the chorda tympani branch from?

A

Facial CNVII

22
Q

What is the otic ganglion?

A

Parasympathetic ganglion in the infratemporal fossa

23
Q

What does the otic ganglion innervate?

A

Parotid gland (with glossopharyngeal)

24
Q

What type of joint is TMJ?

25
Q

What are the articulating surfaces of the TMJ?

A

Head of mandible and mandibular fossa

And articular tubercle on the squamous part of temporal bone

26
Q

What 2 nerves supply the TMJ?

A

Auriculotemporal

Masseteric

27
Q

What are the medial (2) and lateral (1) ligaments that support the capsule of the TMJ?

A

Medial - sphenomandibular and stylomandibular

Lateral - temporomandibular

Anatomy (49 decks)

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