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Clinical Anatomy 1 Aryssara > Infratemporal Fossa > Flashcards

Infratemporal Fossa Flashcards

1
Q

What is the lateral boundary of the infratemporal fossa?

A

Ramus of mandible

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2
Q

What is the medial boundary of the infratemporal fossa?

A

Lateral pterygoid plate

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3
Q

What is the anterior boundary of the infratemporal fossa?

A

Posterior maxilla

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4
Q

What is the posterior boundary of the infratemporal fossa?

A

Mastoid, styloid process

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5
Q

What is the superior boundary of the infratemporal fossa?

A

Greater wing of sphenoid

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6
Q

What is the inferior boundary of the infratemporal fossa?

A

Mandibular attachment of the medial pterygoid m.

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7
Q

What are the muscles of mastication?

A

Masseter, Temporalis, Medial and Lateral pterygoid.

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8
Q

What innervates the muscles of mastication?

A

Mandibular n (from CN V3)

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9
Q

What are the actions of masseter?

A

Elevation, protraction and retraction of the mandible

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10
Q

What are the actions of temporalis?

A

Elevation and retraction of the mandible

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11
Q

What are the actions of medial pterygoid?

A

Elevation of mandible and rotates mandible to produce side to side chewing movements.

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12
Q

What are the actions of lateral pterygoid?

A

Depresses mandible, protracts and rotates mandible for side to side chewing movements.

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13
Q

What are the attachments of masseter?

A

From the zygomatic arch to the angle of the mandible and ramus

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14
Q

What are the attachments of temporalis?

A

From the temporal fossa to the coronoid process and ramus

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15
Q

What are the attachments of lateral pterygoid?

A

From the infratemporal surface of the sphenoid & lateral surface of the lateral pterygoid plate to the neck of the mandible and the TMJ disc

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16
Q

What are the attachments of medial pterygoid?

A

From the medial surface of the lateral pterygoid polate and adjacent maxilla to the medial aspect of the angle of the mandible

17
Q

What are the nerves found in the infratemporal fossa?

A

Mandibular V3, Auriculotemporal, Inferior alveolar, lingual, and chorda tympani.

18
Q

What are the components of the TMJ?

A

Articular tubercle, Mandibular fossa, Articular disc, and head of mandible.

19
Q

What are the ligaments that span the TMJ?

A

Joint capsule, lateral ligament, and stylomandibular ligament.

20
Q

What are the attachments of the lateral temporomandibular ligmament?

A

Zygomatic process to mandibular neck

21
Q

What are the attachments of the stylomandibular ligament?

A

Styloid process to angle of mandible

22
Q

What innervates the TMJ capsule?

A

Auriculotemporal, deep temporal, and masseteric. (small branches of V3)

Clinical Anatomy 1 Aryssara (16 decks)

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