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Gross II > Infratemporal Fossa > Flashcards

Infratemporal Fossa Flashcards

1
Q

What are the borders of the infratemporal fosaa

A

Anterior: maxilla
Medial: lateral pterygoid plate
Roof: greater wing of sphenoid
lateral: ramus of mandible

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2
Q

What three areas communicate with the infratemporal foss

A

Superiorly: Temporal Fossa
Cranial Cavity: Foramen Ovale, Foramen Spinosum,
Orbit: inferior orbital fissure

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3
Q

What is the origin of the medial pterygoid muscle

A

Medial surface of the lateral pterygoid plate of sphenoid

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4
Q

What is the insertion of the medial pterygoid

A

Medial surface of the ramus of the mandible

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5
Q

What is the action of the medial pterygoid

A

elevates, contralaterally deviates, and protracts the mandible

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6
Q

What is the innervation of the medial pterygoid muscle

A

Medial pterygoid nerve (V3)

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7
Q

What is the origin of the lateral pterygoid

A

Inf Head: lateral surface of pterygoid plate

Sup Head: Greater wing of the sphenoid

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8
Q

What is the insertion of the lateral pterygoid

A

Neck of the mandibular condyle, TMJ capsule, articular disc

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9
Q

What is the action of the lateral pterygoid muscle

A

Depresses, contralaterally deviates and protracts the mandible

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10
Q

What is the innervation of the lateral pterygoid muscle

A

Lateral pterygoid nerve (V3)

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11
Q

What is the origin of the masseter

A

zygomatic arch

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12
Q

What is the insertion of the masseter

A

lateral surface of mandibular ramus

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13
Q

What is the action of the masseter muscle

A

elevates the mandible and protrudes

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14
Q

What is the innervation of the masseter muscle

A

Masseteric nerve (V3)

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15
Q

What is the origin of the temporalis muscle

A

temporal fossa

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16
Q

What is the insertion for the temporalis muscle

A

coronoid process of mandibular ramus

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17
Q

What is the action of the temporalis muscle

A

elevates and retracts the mandible

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18
Q

What is the innervation of the temporalis muscle

A

Deep Temporal nerves (V3)

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19
Q

What is the major artery of the infratemporal fossa

A

Maxillary artery

20
Q

What does the auricular artery and tympanic artery supply

A

Ext ear, ext auditory canal, tympanic membrane, TMJ

21
Q

What does the middle meningeal artery supply

A

cranial dura, cranial bones

22
Q

How does the inferior alveolar artery travel

A

enters the mandible on its medial surface via the mandibular foramen and traverses the mandibular canal

23
Q

What does the inferior alveolar artery supply

A

mandible
teeth and gums
soft tissues of the chin

24
Q

What muscles are innervated by the muscular branches of the maxillary artery

A

Temporalis
Masseter
Pterygoids

25
What is supplied by the buccal artery
soft tissues of the cheek
26
What is supplied by the posterior superior alveolar artery
posterior teeth of the upper jaw
27
What is supplied by the infraorbital artery
anterior face, maxillary sinus, anterior teeth of maxilla
28
What is supplied by the sphenopalatine artery
nasal cavity palate sinuses
29
How does the sphenopalatine artery enter the sphenopalatine fossa
passes through the pterygomaxillary fissure
30
Where do the veins of the infratemporal fossa drain to
pterygoid venous plexus of veins
31
Where does the pterygoid plexus drain into
facial or retromandibular veins
32
What type of neurons make up the mandibular nerve (V3)
sensory and motor neurons
33
How does V3 enter the infratemporal fossa
foramen ovale
34
What do the motor branches innervate
muscles of mastication
35
What is innervated by the meningeal nerve
Dura of the middle cranial fossa
36
What are the muscular branches of the mandibular nerve
Masseteric n Medial pterygoid n Lateral pterygoid n Deep temporal nerves (temporalis muscle)
37
What is innervated by the Buccal nerve
sensory to the skin of the cheek and mucous membrane inside the cheek
38
What is innervated by the auriculotemporal nerve
pinna of the ear skin of the temporal region some of the tympanic membrane TMJ -- **important**
39
What is innervated by the lingual nerve
sensory to the anterior 2/3 of tongue | floor of the oral cavity
40
What is the chorda tympani nerve a branch of
CN 7
41
How does the chorda tympani nerve travel
hitchhikes with the lingual nerve
42
What is innervated by the inferior alveolar nerve
all teeth of the lower jaw
43
What are the two terminal branches from the inferior alveolar nerve
Mental nerve | myolohyoid nerve
44
What is innervated by the mental nerve
skin near the chin and lower lip
45
What is innervated by the myolohyoid nerve
motor to myolohyoid and anterior belly of digastric muscles

Gross II (13 decks)

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