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MGA Exam 4 > Temporal Region > Flashcards

Temporal Region Flashcards

1
Q

What is the site of articulation of the mandible with the skull

A

Mandibular fossa

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2
Q

Condylar process is held in place by

A

Postgelnoid tubercle

Articular eminence

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3
Q

What 2 ligaments prevents posterior dislocation of the TMJ joint

A

Temporomandibular ligament and plostgelnoid tubercle

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4
Q

What is suspended by the 3 TMJ ligaments

A

Articular capsule

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5
Q

Superior compartment of TMJ is responsible for

A

A-P translation

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6
Q

Inferior compartment of TMJ is responsible for

A

Hinge-like motion

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7
Q

What muscle provides the main protrusvie and depressive force on the jaw

A

Lateral pterygoid

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8
Q

What muscle provides the main retrusive force on the jaw

A

Temporalis

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9
Q

Function of medial pterygoid muscle

A

Closes jaw and provides some protrusive force

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10
Q

What is the main muscle of jaw closing

A

Masseter

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11
Q

All the muscles of mastication are innervated by

A

V3 (mandibular division of trigemnial)

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12
Q

Main muscles for elevation of the jaw

A

Temporalis

Masseter

Medial pterygoid

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13
Q

Main muscles for depression of jaw

A

Gravity

Lateral pteryoid (inferior head)

Anterior belly of digastric

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14
Q

Main muscles for protrusion of jaw

A

Lateral pterygoid

Masseter (superficial fibers)

Medial pterygoid

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15
Q

Main muscles for retrusion of the jaw

A

Temporalis (posterior fibers)

Anterior belly of digastric

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16
Q

Main muscles for lateral excursion of jaw

A

Unilateral contraction of:

Temporalis
Masseter
Medial pterygoid
Lateral pteryoid
Anterior belly of digastric
17
Q

Contents of infratemporal fossa

A

Mandibular nerve + branches (V3)

SA and VE structures and fibers

Maxillary artery + branches

Pterygoid venous plexus

One branch of the facial nerve

Medial and lateral pterygoid muscles

Sphenomandibular ligament

18
Q

V3 supplies general efferents to:

A

Masseter

Temporalis

Medial and lateral pterygoids

Anterior belly of digastric

Mylohyoid

Tensor veli palatini

Tensor tympani

19
Q

The auriculotemporal nerve spits around the

A

middle meningial artery

20
Q

Inferior alveolar nerve exits through

A

Mandibular canal –> mental foramen

21
Q

Maxillary artery originates in the __ and passes between ___ and ___

A

Originates in the parotid gland

Passes between the neck of the mandible and sphenomandibular ligament

22
Q

Pterygoid venous plexus receives blood from

A

Regions supplied by the maxillary artery

23
Q

Pterygoid venous plexus flows into

A

Short maxillary vein –> retromandibular vein

24
Q

Pterogoid venous plexus connects with facial vein via

A

Deep facial vein

25
Q

Pterygoid venous plexus connects with cavernous sinus via

A

Emissary veins

MGA Exam 4 (8 decks)

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