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Block 6 > Temporal Fossa and ITF > Flashcards

Temporal Fossa and ITF Flashcards

1
Q

What attaches to the Fovea of the Condylar process of the mandible?

A

The

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2
Q

What attaches to the lingual of the mandible?

A

The sphenomandibular ligament

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3
Q

What runs on the sphenomandibular ligament?

A

The inferior alveolar artery and nerve, sliding down it into the mandibular foramen.

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4
Q

What bones make up the floor of the TEMPORAL Fossa?

A

Pterion bones:

Squamous part of Temporal
Greater Wing of Sphenoid
Frontal Bone
Parietal Bone

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5
Q

The weakest part of the skull is called the _______. Fracture here, and you get a/an ___________.

A

Fracture the Pterion to get an Extradural Hematoma due to rupture of the Middle Meningeal Artery.

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6
Q

What forms the roof of the Temporal Fossa?

A

Temporalis muscle and fascia

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7
Q

Where is the ITF located?

A

Deep the the ramus of the mandible and inferior to the zygomatic arch.

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8
Q

The Temporal Fossa communicates wit the ITF through….?

A

The interval between the zygomatic arch and the cranial bones

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9
Q

Name the Anterior border of the ITF.

A

Intratemporal surface of Maxilla

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10
Q

Posterior border of the ITF:

A

Verticle plane of the Styloid process (temporal bone)

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11
Q

Roof of the ITF:

A

Infratemporal Crest and Greater Wing of the Sphenoid

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12
Q

Medial Border of the ITF:

A

Lateral Pterygoid plate

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13
Q

Lateral Border of the ITF:

A

Ramus of Mandible

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14
Q

How does the ITF communicate with the PP Fossa?

A

Through the Pterygomaxillary fissure.

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15
Q

What is conducted through the Pterygomaxillary fissure?

A

Maxillary artery

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16
Q

Name some contents of the ITF

A

Muscles of Mastication
V3 Mandibular and its branches
Maxillary artery (proximal 2/3)
Pterygoid plexus of Veins

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17
Q

What 2 foramina go through the greater wing of the sphenoid to connect the MCF with the ITF? (NOT the PP Fossa)

A

Ovale (V3, Accessory Memingeal Artery, and Lesser Petrosal N.)

Spinosum (middle meningeal artery and nerve)

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18
Q

The greater wing of the sphenoid forms part of the floor of the ___________ and the roof of the _________.

A

Floor of MCF, Roof of ITF

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19
Q

Name the Muscles of Mastication and their innervation.

Which arch?

A

Masseter
Temporalis
Lateral Pterygoid
Medial Pterygoid

Innervated by v3, 1st arch muscles.

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20
Q

What nerve can be found running along/in the attachment of the Temporalis muscle?

A

Buccal Sensory (V3 branch)

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21
Q

What is the function of the temporalis muscle?

A

Elevate and RETRACT the mandible

temporalis lets you do the tard face

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22
Q

Where does the Temporalis muscle originate and insert?

A

Originates in Temporal Fossa and Attaches on the coronoid process of the mandible, down to the 3rd molar tooth.

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23
Q

Origin, Insertion, and Action of the Masseter Muscle.

A

O- Zygomatic Arch and bone
Ins- Angle of mandible (lateral)
Action: elevates mandible

24
Q

The __________ can be found running through the two heads of the lateral pterygoid. Sometimes (60%) you can also find the ____________ there too.

A

Buccal V3 (sensory)

Maxillary Artery (60%)

25
The MEDIAL Pterygoid's fibers Mirror those of the ___________.
Masseter (Lab association)
26
The UPPER head of the Lateral Pterygoid muscle originates and inserts where?
O- Infratemporal crest of the Spenoid bone (same as roof of the ITF) Ins- Articular disk of the TMJ
27
THe LOWER head of the Lateral Pterygoid originates and inserts where?
O- Lateral surface of the Lateral Pterygoid plate Ins- Condyle of Mandible
28
What are the 2 functions of the Lateral Pterygoid muscle? What about the medial?
Lateral- PROTRUDE and Laterally move the mandible Medial- elevate and laterally move
29
The medial pterygoid (both heads) originate where? THey have a common insertion on the __________.
O- Medial surface of Lateral Pterygoid plate and Pyramidal process of Palatine bone. Ins- Medial angle of the Mandible (inside)
30
How do you tell the lateral and medial pterygoids apart in lab?
Medial pterygoid muscle fibers mirror the masseter, and insert on the ramus. Find the insertions.
31
The upper compartment of the TMJ glides or hinges? Lower part?
Upper- glides Lower- hinges
32
What kind of joint is the TMJ
Synovial
33
The maxillary artery arises where, in relation to the skull?
Posterior to the ramus of the mandible.
34
The maxillary artery is divided into 3 parts based on its relationship to what?
The lateral pterygoid muscle.
35
The first 2 parts of the maxillary artery are called _________ and ___________ and are found in the __________.
Mandibular component and Pterygoid component FOund in the ITF
36
What artery and nerve enter the mandibular foramen?
The Inferior Alveolar artery (branch of Maxillary) Inferior Alveolar Nerve
37
Describe the path of the middle meningeal artery/
Branches off the Maxillary Artery in the ITF and courses superiorly to reach Foramen Spinosum. It passes through the loop of the Auriculotemporal Nerve first. (V3 sensory branch)
38
The accessory meningeal artery runs through which cranial foramen? WHat else runs through this hole?
Ovale Accessory Memingeal V3 Lesser Petrosal Nerve (IX)
39
If you see an artery off the Maxillary running into bone, what is it?
Posterior Superior Alveolar Artery
40
Where would you find the Pterygoid Venous Plexus?
Running partially in between the Temporalis and pterygoid muscles in the ITF
41
What veins form anastomoses with the Pterygoid Plexus?
Cavernous sinus via emissary veins | Facial Vein via the Deep Facial Vein
42
The confluence of the Maxillary Vein and the Superficial Temporal vein forms what?
The retromandibular vein, which goes on to join with Posterior Aruicular to form the External Carotid Artery
43
Where does the Facial Vein drain?
Internal Carotid Artery
44
What is the only branch of Trigeminal (V) that carries motor fibers?
V3 Mandibular
45
V3 sensory neurons have their cell bodies where?
Trigeminal (semilunar) ganglion
46
V3 splits into 2 divisions. What MUSCLES do each division innervate? What sensory branches are in each division?
Aterior Division = BE to MAST MATT, GSA Buccal Sensory Posterior Division = BE- N to Mylohyoid (Ant Digastric and Mylohyoid) GSA= auriculotemporal, inferior alveolar, and lingual
47
What nerve forms the inferior dental plexus/
Inferior Alveolar (V3)
48
What nerve supplies GSA to the Parotid gland, the TMJ, and the EAM?
Auriculotemporal
49
What nerve hitchhikes on the Auriculotemporal N? What fibers, and what does it supply?
Lesser Petrosal (CN IX) - postganglionic parasympathetic to the parotid gland.
50
What nerve gives off the nerve to Mylohyoid?
Inferior Alveolar
51
What nerve does the submandibular ganglion associate with?
Lingual (contains postganglionic cell bodes from chord tympani)
52
What runs in the MLOHYOID GROOVE on the mandible?
The Nerve to Mylohyoid. BE to ant. digastric and mylohyoid muscles
53
What nerve's postganglionic cell bodies are located in the OTIC ganglion, and with what branch of V3 does it hitchhike?
Lesser Petrosal nerve has postganglionics in the otic ganglion, and they hitchhike on the auriculotemporal nerve.
54
There is a small branch of the inferior alveolar that supplies the canine and incisor teeth. Name it.
Incisive branch. (supplies incisors…. intuitive.)
55
Taste buds on the soft pallet are innervated by….
SE from the GREATER PETROSAL NERVE

Block 6 (8 decks)

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