Trigeminal Nerve

Question 1

What are the three divisions of the trigeminal nerve?

Answer 1

Ophthalmic nerve (V1)
Maxillary nerve (V2)
Mandibular nerve (V3)

Question 2

Where does the ophthalmic nerve exit the cranial cavity?

Answer 2

Superior orbital fissure

Question 3

Where does the maxillary nerve exit the cranial cavity?

Answer 3

Foramen rotundum

Question 4

Where does the mandibular nerve exit the cranial cavity?

Answer 4

Foramen ovale

Question 5

The mandibular division of the trigeminal nerve provides sensation from which regions?

Answer 5

Side of head
Skin of face over mandible
Lower lip
Mandibular teeth
Temporomandibular joint
Mucosa of mouth
Anterior 2/3 of tongue

Question 6

Where does the mandibular nerve exit the skull distally? What is it called then?

Answer 6

Mental foramen

Mental nerve

Question 7

Where is the mandibular foramen?

Answer 7

On medial aspect of ramus of mandible

Question 8

Which branch of the mandibular nerve enters the mandible at the mandibular foramen?

Answer 8

Inferior alveolar nerve

Question 9

Which branches of the mandibular nerve supply the mandibular teeth?

Answer 9

Inferior dental plexus

Question 10

Which muscles are innervated by the mandibular division of trigeminal nerve?

Answer 10

Masseter
Temporalis
Medial pterygoid
Lateral pterygoid

Question 11

Which branch of the mandibular nerve travels posterior and superiorly?

Answer 11

Auriculotemporal nerve

Question 12

Which branch of the mandibular nerve supplies the region of the cheek?

Answer 12

Buccal nerve

Question 13

Which branch of the mandibular nerve supplies the tongue?

Answer 13

Lingual nerve

Question 14

When does the mandibular nerve become the inferior alveolar nerve?

Answer 14

In the infratemporal fossa (after it passes through foramen ovale)

Question 15

What does the auriculotemporal nerve supply?

Answer 15

Side of head and temporomandibular joint

Question 16

Where does the lingual nerve lie in relation to the inferior alveolar nerve?

Answer 16

Anterior and medial to inferior alveolar nerve

Question 17

Where is it best to look for inferior alveolar and lingual nerves?

Answer 17

Between the inferior head of the lateral pterygoid muscle and deep head of medial pterygoid muscle

Question 18

Which divisions of the trigeminal nerve are sensory only?

Answer 18

Ophthalmic nerve

Maxillary nerve

Question 19

Which regions of sensation are innervated by the ophthalmic division of trigeminal nerve?

Answer 19

Scalp
Skin of forehead
Superior eyelid
Cornea
Nose
Mucosa of nasal cavity and sinuses

Question 20

Which regions of sensation are innervated by the maxillary division of the trigeminal nerve?

Answer 20

Skin of face over maxilla
Inferior eyelid
Upper lip
Maxillary teeth
Mucosa of nose
Maxillary sinuses
Palate

Question 21

Where does the ophthalmic nerve exit the skull distally? What is it called here?

Answer 21

Supra-orbital foramen

Supra-orbital nerve

Question 22

Where does the maxillary nerve exit the skull distally? What is it called here?

Answer 22

Infra-orbital foramen

Infra-orbital nerve

Question 23

What are the 3 main branches of the ophthalmic nerve?

Answer 23

Lacrimal nerve
Frontal nerve
Nasociliary nerve

Question 24

Which branch of the trigeminal nerve passes through the common tendinous ring?

Answer 24

Nasociliary nerve

Question 25

Where does the frontal nerve lie in the orbit?

Answer 25

Superior to levator palpebrae superioris

Question 26

Where does the lacrimal nerve travel?

Answer 26

Laterally to the lacrimal gland

Question 27

Where does the nasociliary nerve lie in the orbit?

Answer 27

Medially

Question 28

What does the frontal nerve divide into?

Answer 28

Supraorbital nerve | Supratrochlear nerve

Question 29

What branches of the ophthalmic nerve do not enter the orbit?

Answer 29

Tentorial nerve Meningeal nerve Recurrent meningeal nerve

Question 30

What branches does the nasociliary nerve give?

Answer 30

Posterior ethmoid nerve Anterior ethmoid nerve Infratrochlear nerve

Question 31

Which branches of the opthalmic nerve supply the nasal cavity?

Answer 31

Posterior and anterior ethmoid nerve

Question 32

Where does the nasociliary nerve lie in relation to the optic nerve?

Answer 32

Crosses over optic nerve

Question 33

Where does the maxillary nerve enter the orbit?

Answer 33

Inferior orbital fissure

Question 34

How does the maxillary nerve travel through the orbit?

Answer 34

Through the infraorbital groove/canal

Question 35

What branches does the maxillary nerve give off in the orbit?

Answer 35

Zygomatic nerve Infraorbital nerve Anterior/middle/posterior superior alveolar nerves

Question 36

What branch does the maxillary nerve give off that does not enter the orbit?

Answer 36

Meningeal branch

Question 37

What branches does the zygomatic nerve give off?

Answer 37

Zygomatico-temporal nerve | Zygomatico-facial nerve

Question 38

What are the cutaneous nerves of the face that branch off of the ophthalmic nerve?

Answer 38

``` Supra-orbital nerve Supra-trochlear nerve Lacrimal nerve Infra-trochlear nerve External nasal nerve ```

Question 39

Name the cutaneous nerves of the face that branch off of the maxillary nerve.

Answer 39

Zygomatico-temporal nerve Zygomatico-facial nerve Infra-orbital nerve

Question 40

What are the cutaneous nerves associated with the mandibular nerve?

Answer 40

Auriculotemporal nerve Buccal nerve Mental nerve