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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
Q

The MEDIAL Pterygoid’s fibers Mirror those of the ___________.

A

Masseter (Lab association)

26
Q

The UPPER head of the Lateral Pterygoid muscle originates and inserts where?

A

O- Infratemporal crest of the Spenoid bone (same as roof of the ITF)

Ins- Articular disk of the TMJ

27
Q

THe LOWER head of the Lateral Pterygoid originates and inserts where?

A

O- Lateral surface of the Lateral Pterygoid plate

Ins- Condyle of Mandible

28
Q

What are the 2 functions of the Lateral Pterygoid muscle?

What about the medial?

A

Lateral- PROTRUDE and Laterally move the mandible

Medial- elevate and laterally move

29
Q

The medial pterygoid (both heads) originate where? THey have a common insertion on the __________.

A

O- Medial surface of Lateral Pterygoid plate and Pyramidal process of Palatine bone.

Ins- Medial angle of the Mandible (inside)

30
Q

How do you tell the lateral and medial pterygoids apart in lab?

A

Medial pterygoid muscle fibers mirror the masseter, and insert on the ramus. Find the insertions.

31
Q

The upper compartment of the TMJ glides or hinges? Lower part?

A

Upper- glides

Lower- hinges

32
Q

What kind of joint is the TMJ

A

Synovial

33
Q

The maxillary artery arises where, in relation to the skull?

A

Posterior to the ramus of the mandible.

34
Q

The maxillary artery is divided into 3 parts based on its relationship to what?

A

The lateral pterygoid muscle.

35
Q

The first 2 parts of the maxillary artery are called _________ and ___________ and are found in the __________.

A

Mandibular component and Pterygoid component

FOund in the ITF

36
Q

What artery and nerve enter the mandibular foramen?

A

The Inferior Alveolar artery (branch of Maxillary)

Inferior Alveolar Nerve

37
Q

Describe the path of the middle meningeal artery/

A

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
Q

The accessory meningeal artery runs through which cranial foramen? WHat else runs through this hole?

A

Ovale

Accessory Memingeal
V3
Lesser Petrosal Nerve (IX)

39
Q

If you see an artery off the Maxillary running into bone, what is it?

A

Posterior Superior Alveolar Artery

40
Q

Where would you find the Pterygoid Venous Plexus?

A

Running partially in between the Temporalis and pterygoid muscles in the ITF

41
Q

What veins form anastomoses with the Pterygoid Plexus?

A

Cavernous sinus via emissary veins

Facial Vein via the Deep Facial Vein

42
Q

The confluence of the Maxillary Vein and the Superficial Temporal vein forms what?

A

The retromandibular vein, which goes on to join with Posterior Aruicular to form the External Carotid Artery

43
Q

Where does the Facial Vein drain?

A

Internal Carotid Artery

44
Q

What is the only branch of Trigeminal (V) that carries motor fibers?

A

V3 Mandibular

45
Q

V3 sensory neurons have their cell bodies where?

A

Trigeminal (semilunar) ganglion

46
Q

V3 splits into 2 divisions. What MUSCLES do each division innervate? What sensory branches are in each division?

A

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
Q

What nerve forms the inferior dental plexus/

A

Inferior Alveolar (V3)

48
Q

What nerve supplies GSA to the Parotid gland, the TMJ, and the EAM?

A

Auriculotemporal

49
Q

What nerve hitchhikes on the Auriculotemporal N? What fibers, and what does it supply?

A

Lesser Petrosal (CN IX) - postganglionic parasympathetic to the parotid gland.

50
Q

What nerve gives off the nerve to Mylohyoid?

A

Inferior Alveolar

51
Q

What nerve does the submandibular ganglion associate with?

A

Lingual (contains postganglionic cell bodes from chord tympani)

52
Q

What runs in the MLOHYOID GROOVE on the mandible?

A

The Nerve to Mylohyoid. BE to ant. digastric and mylohyoid muscles

53
Q

What nerve’s postganglionic cell bodies are located in the OTIC ganglion, and with what branch of V3 does it hitchhike?

A

Lesser Petrosal nerve has postganglionics in the otic ganglion, and they hitchhike on the auriculotemporal nerve.

54
Q

There is a small branch of the inferior alveolar that supplies the canine and incisor teeth. Name it.

A

Incisive branch. (supplies incisors…. intuitive.)

55
Q

Taste buds on the soft pallet are innervated by….

A

SE from the GREATER PETROSAL NERVE

Block 6 (8 decks)

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