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Undeleted > Temporal Region and Pterygopalatine Fossa > Flashcards

Temporal Region and Pterygopalatine Fossa Flashcards

1
Q

Where is the termporal fossa?

A
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2
Q

Where does the temporal fossa communicate with the infratemporal fossa?

A

via the gap between the zygomatic arch and the medial skull

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3
Q

What is the infratemporal fossa?

A

is a wedge shaped space deep to the masseter muscle

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4
Q

What fossa is this?

A

Temporal Fossa

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5
Q

What fossa is this?

A

Infratemporal fossa

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6
Q

What kind of joint is the TMJ?

A
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7
Q

What is the lower part of the TMJ used for?

A

allows elevation and depression

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8
Q

What is the upper part of the TMJ used for?

A

for protrusion and retraction

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9
Q

What are the three extracapsular ligaments of the TMJ?

A
  1. lateral ligament
  2. sphenomandibular ligament
  3. stylomandibular ligament
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10
Q

What muscles are used to open the mouth or cause depression of the mandible?

A
  1. lateral pterygoid
  2. suprahyoid
  3. infrahyoid
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11
Q

What muscles are used to close the mouth or cause elevation of the mandible?

A
  1. Temporalis
  2. masseter
  3. medial pterygoid
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12
Q

What muscles are used to protrude the mandible?

A
  1. Lateral pterygoid
  2. Masseter
    3.
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13
Q

What muscles are used to retract the mandible?

A
  1. Temporalis
  2. Masseter
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14
Q

What is the function of the temporalis?

A

To elevate the mandible or close the mouth

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15
Q

How do the fibers of the lateral pterygoid run?

A

nearly horizontal

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16
Q

How do the fibers of the medial pterygoid run?

A

almost

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17
Q

what movement of the mandible does the lateral pterygoid do?

A

protrusion

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18
Q

What innervates the medial and lateral pterygoids?

A

mandibular division of trigeminal (V3)

19
Q

What innervates the Temporalis?

A

by the mandibular division of the trigeminal nerve (V3)

20
Q

What nerve supplies the skin of the temporal region?

A

the zygomaticotemporal branch of V2

21
Q

What are the arteries of the temporal fossa?

A
  • deep temporal arteries from maxillary artery
  • middle temporal artery from the superficial temporal artery
22
Q

What is in the infratemporal fossa?

A
  • Medial/Lateral pterygoid muscles
  • maxillary artery
  • mandibular division of trigeminal nerve
  • pterygoid plexus of veins
  • branches of CN 7/9
23
Q

What is the motor innervation to the Masseter muscle?

A

V3 of trigeminal nerve

24
Q

What is motor innervation to Medial and Lateral Pterygoid muscles?

A

V3 of trigeminal (Mandibular)

25
Q

What gives sensation to the anterior 2/3 of the tongue?

A

Lingual nerve branch of V3 (mandibular)

26
Q

What does the inferior alveolar nerve do?

A

it is a sensory branch of V3 (Mandibular) and it gives general sensation to lower teeth, lower lip and chin.

It is motor to mylohyoid muscle

27
Q

What does the Chorda tympani nerve do?

A

gives sensation (special sensory afferent) to the anterior 2/3 of tongue via the lingual nerve

28
Q

From where does the chorda tympani originate?

A

the facial nerve

29
Q

What kind of nerve fibers does the Chorda Tympani carry to the submandibular ganglion?

A

Preganglionic Parasympathetic via the lingual nerve

30
Q

What nerve is affected in Bell’s Palsy?

A

Facial Nerve (CN VII)

31
Q

What is Frey’s Syndrome?

A

Uncontrolled sweating upon eating caused by promiscuous parasympathetic axons innervating sweat glands

32
Q

What are the branches of the Maxillary artery?

A
  1. Middle meningeal
  2. Inferior Alveolar
  3. Buccal Branch
  4. Superior Alveolar
  5. Sphenopalatine
  6. deep temporal branches
33
Q

What veins connect with the Pterygoid Plexus?

A

Emissary veins and facial veins

34
Q

What are the walls of the pterygopalatine fossa?

A

Anterior = maxilla

Medial = palatine bone

Posterior = sphenoid bone

35
Q

What does the foramen rotundum transmit?

A

Maxillary nerve (V2)

36
Q

What passes through the pterigoid canal?

A

Transmits the greater petrosal nerve

37
Q

What does the pterygoid plexus drain?

A

areas supplied by the maxillary artery

38
Q

What branches come off the Maxillary (V2) nerve?

A
  1. Orbital branches
  2. nasal nerves
  3. pharyngeal nerves
  4. zygomatic nerve
  5. posterior superior alveolar nerve
  6. infra-orbital nerve
39
Q

Is the Deep Petrosal Nerve sympathetic of parasympathetic?

A
40
Q

Is the Greater Petrosal Nerve Sympathetic or Parasympathetic?

A

Parasympathetic

41
Q

What kind of nerve fiber does the deep petrosal nerve carry?

A

It carries postganglionic sympathetic fibers

42
Q

What kind of nerve fibers does the Greater Petrosal Nerve carry?

A

It carries preganglionic fibers from the Cranial Nerve VII (facial)

43
Q

What does the Greater Petrosal Nerve innervate?

A

It innervates mucous glands of nose, salivary glands of upper half of oral cavity and lacrimal gland.

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