Anatomy

Question 1

What is the nerve that supplies the face?

Answer 1

Trigeminal nerve

Question 2

What three nerves make up the trigeminal nerve?

Answer 2

Opthalmic (V1)

Maxillary (V2)

Mandibular (V3)

Question 3

Which nerve is the largest division of the trigeminal nerve?

Answer 3

V3 - Mandibular nerve

Question 4

Are the sensory and motor fibres in the mandibular nerve afferent or efferent?

Answer 4

The sensory are afferent and the motor are efferent

Question 5

What do the efferent motor fibres innervate?

Answer 5

Muscles of mastication

Mylohyoid muscle

Anterior belly of the digastric muscle

Tensor Veli paatini muscle

Tensor tympani muscles

Question 6

The efferent motor fibres of the mandibular nerve innervate the Tensor Tympani muscles, what does this nerve then divide into?

Answer 6

Divides into anterior and posterior trunks

Anterior trunk is muscular

The posterior trunk is sensory

Question 7

The anterior trunk of the of the mandibular nerve gives rises to motor branches which supply which mucles?

Answer 7

Masticatory

Long Buccal

Question 8

Whcih nerve branches from the mandibular nerve

Answer 8

Inferior alveolar nerve and lingual nerves

Question 9

Where in the facial anatomy do the inferior alveolar nerve and lingual nerves branch?

Answer 9

Just below the foramen ovale

Question 10

Which muscles do do the inferior alveolar and lingual nerves pass between?

Answer 10

Lateral and medial pterygoid muscle

Question 11

The inferior alveolar nerve branches from the mandibular nerve just below the foramen ovale, wher does it travel to next?

Answer 11

The inferior alveolar nerve enters the mandibular foramen along with its artery

Question 12

What is the mean distance from the mandibular foramen to the anterior border of teh ramus?

Answer 12

16.8mm - 23.2mm

Question 13

What is the mean distance from the mandibular foramen to the posterior border?

Answer 13

10.0mm - 17.8mm

Question 14

where is the inferior alveolar artery located in relation to the inferior alveolar nerve?

Answer 14

posterior or posteriolateral

Question 15

What nerve branches off the inferior alveolar nerve?

Answer 15

Mental nerve

Question 16

Which foramen does the mental nerve come out of?

Answer 16

Mental foramen

Question 17

Where is the mental foramen located?

Answer 17

Between the apices of the premolar teeth

Question 18

Where does the mental nerve supply sensation to?

Answer 18

Skin of the chin

Lower lip

mucosa of lip

gingiva attachments

Question 19

Some gingiva posterior to the mental foramen is innervated by which nerve?

Answer 19

Buccal nerve

Question 20

What nerve is the largest branch of the posterior trunk of the mandibular nerve?

Answer 20

Lingual Nerve

Question 21

Where does the lingual nerve emerge between?

Question 22

After leaving the inferior alveolar merve where does the lingual nerve join?

Answer 22

Chorda Tympani

Question 23

What is the route for the lingual nerve entering the mouth?

Answer 23

Runs downwards across the medial pterygoid and enters the mouth by passing under the lower border of the inferior constrictor of the pharynx and contacts the mandible behing the third molar

Question 24

Where else does the lingual nerve provide sensation for?

Answer 24

Anterior 2/3 of the tongue, floor of the mouth and the lingual aspect of the mandilbe

Question 25

In order to carry out exodontia or minor oral surgery on the mandibular teeth which nerves must be anaesthetised?

Answer 25

Inferior alveolar nerve Mental nerve Long buccal nerve Lingual nerve

Question 26

What is the angle that a buccal infiltration should be injected?

Answer 26

45 degrees

Question 27

Which fibres does the maxillary nerve carry?

Answer 27

Sensory

Question 28

Through what does the maxillary nerve enter the pterygopalatine fossa?

Answer 28

Foramen Rotundum

Question 29

Once the maxillary nerve has passed through the foramen rotundum what does it give off branches to?

Answer 29

Sphenopalatine ganglion

Question 30

What are the three nerves that pass through the sphenopalatine ganglion?

Answer 30

Nasopalatine nerve Greater palatine Lesser palatine

Question 31

Once it has branched off the spenopalatine nerve, where does the nasopalatine nerve pass along, through which canal and emerges where?

Answer 31

Passes along the nasal septum and through the incisive canal and emerges at the incisive foramen on the anterior aspect of the hard palate

Question 32

Once the greater and lesser palatine nerves have passed through the sphenopalatine ganglion where does it travel to?

Answer 32

Travels inferiorly through the greater and lesser palatine foramen

Question 33

Where is the greater and lesser palatine foramen located in the mouth?

Answer 33

The greater palatine foramen is located medial to the distal surface of the upper second molar The lesser palatine foramen is more posterior

Question 34

Which teeth does the greater palatine nerve supply?

Answer 34

Molar to canine

Question 35

What tissues does the lesser palatine nerve supply?

Answer 35

Soft palate and Uvula

Question 36

After the sphenopalatine branches the nerve gives off 2 more braches which are...?

Answer 36

Zygomatic and Posterior superior alveolar nerve

Question 37

What does the zygomatic nerve divide into and what does it supply?

Answer 37

Temporal and facial branches and supplies some of the skin of the temple and the skin overlying the zygomatic bone

Question 38

After branching off the sphenopalatine nerve the posterior superior alveolar nerve it passes inferiorly along the posterior surface of the maxilla and enters the bone 1cm superior and posterior to which tooth?

Answer 38

Third molar

Question 39

What does the posterior superior alveolar nerve supply and what is the exception?

Answer 39

Pulp of all molar teeth apart from the mesio-buccal pulp of the first molar which is most likely to be supplied by the middle superior alveolar nerve

Question 40

After the last branch of the maxillary nerve is given off where does it travel to?

Answer 40

Passes anteriorly through the inferior orbital fissure into the orbital cavity

Question 41

Once the maxillary nerve has entered the infra-orbital canal which nerve does it give off? But what is the exception?

Answer 41

Middle superior alveolar nerve However this nerve is not present in 50% of people

Question 42

The middle superior alveolar nerve travels travels down the lateral wal of the maxillary antrum to supply the pulps of which teeth?

Answer 42

Upper premolars and mesio-buccal pulp of the first molar

Question 43

The maxillary nerve continues to travel after the middle superior alveolar nerve has brached off and what is this nerve now called?

Answer 43

Infra orbital nerve

Question 44

The anterior superior alveolar nerve travels along the roof of the maxillary antrum and decends within the anterior wall of the maxilla to supply which teeth?

Answer 44

Pulps of the upper incisors and canines

Question 45

Where does the terminal branch of the infra orbital nerve emerge frim and what does it supply?

Answer 45

It emerges from the infra orbital foramen and supplies the skin of the face between the eye and nostril and the full thickness of the upper lip on that side