Temporal and infra temporal Fossa

Question 0

What divides the temporomandibular joint in two?

Answer 0

Articular disc of fibrocartilage

Question 1

What type of joint is the temporomandibular joint?

Answer 1

Synovial

Question 2

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

Answer 2

Superior- gliding (back and forth)

Inferior- hinge ( open and close)

Question 3

What does the articular disc attach to?

Answer 3

Joint capsule

Tendon of the lateral pterygoid

Question 4

What are the muscles of mastification?

Answer 4

Temporalis
Masseter
Medial pterygoid
Lateral pterygoid

Question 5

What are all the muscles of mastification innervated by?

Answer 5

V3 (mandibular branch)

Question 6

What is the action of the Temporalis?

Answer 6

Elevate mandible
Right and left lateral movements
Retrusion of mandible

Question 7

What is the action of the massater muscle?

Answer 7

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

Question 8

What is the origin of the lateral pterygoid muscles?

Answer 8

Superior head- sphenoid bone

Inferior head- lateral pterygoid plate

Question 9

What is the insertion of the lateral pterygoid muscle?

Answer 9

Temporal mandibular joint

Mandible

Question 10

What are the actions of the lateral pterygoid muscle

Answer 10

Right and left lateral movements

Depress and protrude mandible

Question 11

What is the action of the medial pterygoid ?

Answer 11

Elevate the mandible
Protrusion of the mandible
Right and left movements

Question 12

What four spaces have communication with the infratemporal fossa?

Answer 12

Temporal fossa
Orbit
Middle cranial fossa
Pterygopalantine fossa

Question 13

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

Answer 13

Anterior and posterior

Question 14

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

Answer 14

Nerve to the medial pterygoid

Meningeal branch

Question 15

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

Answer 15

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

Question 16

What type of innervation is the buccal nerve?

Answer 16

Sensory to the skin and mucosa of cheek

Question 17

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

Answer 17

Nerve to the mylohyoid
Inferior alveolar nerve
Lingual nerve
Auriculotemporal nerve

Question 18

What nerve does the inferior alveolar nerve give off?

Answer 18

Nerve to the mylohyoid

Question 19

What type of ganglion is the optic ganglion?

Answer 19

Parasympathetic

Question 20

What nerve carries preganglionic parasympathetic fibers to the otic ganglion?

Answer 20

Lesser petrosal nerve

Question 21

What nerve carries postganglionic parasympathetics away from the otic ganglion?

Answer 21

Auriculotemporal n.

Question 22

What nerve does the chorda tympani meet up with?

Answer 22

Lingual nerve

Question 23

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

Answer 23

Taste fibers for the anterior 2/3 of tongue

Parasympathetic preganglionic fibers that will synapse in the submandibular ganglion

Question 24

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

Answer 24

Submandibular and sublingual salivary glands

Question 25

What are the 3 parts of the maxillary artery?

Answer 25

Mandibular part Pterygoid part Pterygopalantine part

Question 26

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

Answer 26

``` Deep auricular Anterior tympanic Middle Meningeal Accessory Meningeal Inferior alveolar ```

Question 27

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

Answer 27

Artery to the mylohyoid

Question 28

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

Answer 28

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

Question 29

Where is the pterygoid plexus?

Answer 29

Between the pterygoid muscles and the temporalis muscle

Question 30

What communicates with the pterygoid plexus?

Answer 30

Cavernous sinus Inferior opthalmic vein Deep facial veins