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OPTM 5004 - Head and Neck > TMJ > Flashcards

TMJ Flashcards

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1
Q

What 4 bones come together to form the pterion?

A

Frontal
Parietal
Temporal
Greater Wing of the Sphenoid

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2
Q

What artery is found in the infra temporal fossa?

A

Maxillary a

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3
Q

What venous plexus is found in the infra temporal fossa?

A

Pterygoid venous plexus

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4
Q

What nerves are found in the infra temporal fossa?

A 
Mandibular
Inf. Alveolar
Lingual
Buccal
Chorda Tympani
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5
Q

What ganglion is found in the infra temporal fossa?

A

The otic ganglion

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6
Q

Name the 8 soft structures that are found in the infra temporal fossa.

A 
Maxillary a
Pterygoid venous plexus
Mandibular n
Inf. Alveolar n
Lingual n
Buccal n
Chorda Tympani n
Otic Ganglion
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7
Q

What type of joint is the TMJ?

A

A synovial joint

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8
Q

What types of motion can the TMJ perform?

A 
Gliding
Rotation
Flexion (elevation)
Extension (depression)
All of the mandible
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9
Q

What are the 6 main components of the TMJ?

A 
Mandibular Condyles
Articular Surface of the Temporal Bone
Capsule
Articular Disc
Ligament
Lateral Pterygoid
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10
Q

What is the capsule?

A

Dense fibrous membrane that surrounds the joint

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11
Q

What is the articular disc?

A

Fibrocartilagenous tissue separating the two bones of the TMJ

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12
Q

What do the ligaments of the TMJ do? How many are there?

A

They define the furthest extensions of the mandible. There are 3.

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13
Q

What type of motion does the lateral pterygoid muscle allow?

A

Pulls the mandible forward (protractor)

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14
Q

What are the bony articular surfaces of the TMJ?

A

Mandibular of Fossa of the Temporal Bone

Head of the Mandible

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15
Q

What is the articular disc composed of?

A

Fibrocartilage

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16
Q

Where is the articular disc located?

A

Between the superior and inferior articular surfaces of the TMJ

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17
Q

What are the four true muscles of mastication?

A

Masseter
Temporalis
Medial Pterygoid
Lateral Pterygoid

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18
Q

What is the function of the Masseter and Temporalis?

A

Elevator, retractor of the jaw

19
Q

What is the function of the Medial Pterygoid?

A

Elevator, protractor of the jaw

20
Q

What is the function of the Lateral Pterygoid?

A

Depressor, protractor of the jaw

21
Q

What’s the innervation of each muscle of mastication?

A

Motor Root of CN V3

Masseter = massenteric n
Temporalis = deep temporal branch
Medial Pterygoid = medial pterygoid n
Lateral Pterygoid = lateral pterygoid n

22
Q

What are the accessory muscles of mastication?

A

Buccinator
Orbicularis Oris
Digastric
Tongue

23
Q

What is the Innervation of the Buccinator?

A

CN VII

24
Q

What is the innervation of the orbicularis oris?

A

CN VII

25
Q

What is the innervation of the Digastric?

A 
Anterior = V3
Posterior = VII
26
Q

What is the innervation of the Tongue?

A

CN IX

27
Q

List all the nerves of the infra temporal fossa.

A 
Buccal branch V3
Muscular branches of V3
Inferior alveolar n
Nerve to Mylohyoid
Lingual n
Chorda Tympani
Auricotemporal n
28
Q

List the branches of the maxillary artery.

A

Buccal
Masseteric
Middle meningeal
Infraorbital

29
Q

What is the name of the groove that runs from the mandibular foramen down toward the bottom of the mandible?

A

The mylohyoid groove

30
Q

What soft tissue structure is associated with the mylohyoid groove?

A

Nerve to mylohyoid (branch of V3)

31
Q

List the branches of the mandibular division of CN V

A 
Meningeal branch
Nerve to medial pterygoid
Masseteric n
Deep temporal n
Nerve to lateral pterygoid
Buccal n
Auriculotemporal n
Lingual n
Inferior alveolar n
32
Q

What is the meningeal branch of the CN V also known as?

A

Nervous spinosus

33
Q

What is the location of the parotid gland?

A

Side of face

34
Q

What is the general afferent innervation of the parotid gland?

A 
Auriculotemporal n (V3)
Greater auricular n
35
Q

What is the preganglionic parasympathetic innervation of the parotid gland?

A 
Tympanic n (IX)
Lesser petrosal n
36
Q

What ganglion is associated with the parotid gland?

A

Otic

37
Q

What is the postganglionic parasympathetic innervation of the parotid gland?

A

Auriculotemporal n (V3)

38
Q

What is the sympathetic innervation of the parotid gland?

A

External Carotid arterial plexus

39
Q

What is the location of the submandibular gland?

A

Sublingual and Submandibular spaces

40
Q

What is the general afferent innervation of the submandibular gland?

A

Lingual n (V3)

41
Q

What is the preganglionic parasympathetic innervation of the Submandibular Gland?

A

Chorda Tympani (VII)

42
Q

What ganglion is associated with the Submandibular Gland?

A

Submandibular

43
Q

What is the postganglionic parasympathetic innervation of the Submandibular Gland?

A

Lingual n (V3)

44
Q

What is the sympathetic innervation of the Submandibular Gland?

A

External carotid arterial plexus

OPTM 5004 - Head and Neck (15 decks)

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