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Anatomy Block 3 > Temporal and infra temporal Fossa > Flashcards

Temporal and infra temporal Fossa Flashcards

0
Q

What divides the temporomandibular joint in two?

A

Articular disc of fibrocartilage

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1
Q

What type of joint is the temporomandibular joint?

A

Synovial

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2
Q

What are the two compartments of the temporomandibular joint and what motion do they do?

A

Superior- gliding (back and forth)

Inferior- hinge ( open and close)

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3
Q

What does the articular disc attach to?

A

Joint capsule

Tendon of the lateral pterygoid

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4
Q

What are the muscles of mastification?

A

Temporalis
Masseter
Medial pterygoid
Lateral pterygoid

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5
Q

What are all the muscles of mastification innervated by?

A

V3 (mandibular branch)

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6
Q

What is the action of the Temporalis?

A

Elevate mandible
Right and left lateral movements
Retrusion of mandible

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7
Q

What is the action of the massater muscle?

A

Elevate mandible
Move mandible right and left
Protrusion of mandible
Retrusion of mandible

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8
Q

What is the origin of the lateral pterygoid muscles?

A

Superior head- sphenoid bone

Inferior head- lateral pterygoid plate

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9
Q

What is the insertion of the lateral pterygoid muscle?

A

Temporal mandibular joint

Mandible

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10
Q

What are the actions of the lateral pterygoid muscle

A

Right and left lateral movements

Depress and protrude mandible

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11
Q

What is the action of the medial pterygoid ?

A

Elevate the mandible
Protrusion of the mandible
Right and left movements

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12
Q

What four spaces have communication with the infratemporal fossa?

A

Temporal fossa
Orbit
Middle cranial fossa
Pterygopalantine fossa

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13
Q

What two divisions does the mandibular trigeminal nerve divide into whe it enters the infratemporal fossa?

A

Anterior and posterior

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14
Q

What are the two branches off the main trunk of the mandibular branch of the trigeminal?

A

Nerve to the medial pterygoid

Meningeal branch

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15
Q

What are the anterior branches of the mandibular branch of the trigeminal?

A

Nerve to the massater
Nerve to the lateral pterygoid
Deep temporal nerves
Buccal nerve

16
Q

What type of innervation is the buccal nerve?

A

Sensory to the skin and mucosa of cheek

17
Q

What are the 4 posterior nerves from the mandibular division of the trigeminal

A

Nerve to the mylohyoid
Inferior alveolar nerve
Lingual nerve
Auriculotemporal nerve

18
Q

What nerve does the inferior alveolar nerve give off?

A

Nerve to the mylohyoid

19
Q

What type of ganglion is the optic ganglion?

A

Parasympathetic

20
Q

What nerve carries preganglionic parasympathetic fibers to the otic ganglion?

A

Lesser petrosal nerve

21
Q

What nerve carries postganglionic parasympathetics away from the otic ganglion?

A

Auriculotemporal n.

22
Q

What nerve does the chorda tympani meet up with?

A

Lingual nerve

23
Q

What two fibers does the chorda tympani contain when it meets up with the lingual nerve?

A

Taste fibers for the anterior 2/3 of tongue

Parasympathetic preganglionic fibers that will synapse in the submandibular ganglion

24
Q

What do the postganglionic parasympathetic fibers from the submandibular ganglion innervate?

A

Submandibular and sublingual salivary glands

25
Q

What are the 3 parts of the maxillary artery?

A

Mandibular part
Pterygoid part
Pterygopalantine part

26
Q

What are the five branches of the mandibular part of the maxillary artery

A 
Deep auricular 
Anterior tympanic
Middle Meningeal
Accessory Meningeal 
Inferior alveolar
27
Q

What artery does the inferior alveolar give off before entering the mandibular foramen?

A

Artery to the mylohyoid

28
Q

What are the four branches of huge pterygoid part of the maxillary artery?

A

Masseteric artery
Anterior and posterior deep temporal arteries
Pterygoid arteries
Buccal arteries

29
Q

Where is the pterygoid plexus?

A

Between the pterygoid muscles and the temporalis muscle

30
Q

What communicates with the pterygoid plexus?

A

Cavernous sinus
Inferior opthalmic vein
Deep facial veins

Anatomy Block 3 (12 decks)

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