Trigeminal Nerve

Question 1

What are the three major divisions of the trigeminal nerve?

Answer 1

V1 ophthalmic nerve
V2 maxillary nerve
V3 mandibular nerve

Question 2

Where does the ophthalmic nerve exit the middle cranial fossa?

Answer 2

superior orbital fissure

Question 3

Where does the maxillary nerve exit the middle cranial fossa?

Answer 3

foramen rotundum

Question 4

Where does the mandibular nerve exit the middle cranial fossa?

Answer 4

foramen ovale

Question 5

What 4 branches arise from V1?

Answer 5

tentorial nerve
nasociliary nerve
frontal nerve
lacrimal nerve

Question 6

What branches arise from V2?

Answer 6

meningeal branch of the maxillary nerve
zygomatic nerve
ganglionic branches to the pterygopalatine ganglion -> greater & lesser palatine nerves
posterior superior alveolar nerve
middle superior alveolar nerve
anterior superior alveolar nerve
infraorbital nerve

Question 7

What 6 branches arise from V3?

Answer 7

meningeal branch of the mandibular nerve
auriculotemporal nerve
buccal nerve
lingual nerve
muscular branches of the mandibular nerve (deep temporal muscles, masseter, pterygoids, tensor tympani, tensor veli palatini)
inferior alveolar nerve (and mental nerve)

Question 8

What types of nerve fibers are found in V1?

Answer 8

entirely somatic sensory

Question 9

What types of nerve fibers are found in V2?

Answer 9

entirely somatic sensory

Question 10

What types of nerve fibers are found in V3?

Answer 10

contains BOTH somatic sensory and branchial motor fibers

Question 11

What nerve subserves the dura mater of the tentorial cerebelli?

Answer 11

tentorial nerve of ophthalmic nerve V1

Question 12

What nerve subserves the eyeball and structures within the eye?

Answer 12

nasociliary nerve of ophthalmic nerve V1

Question 13

What nerves subserve the ethmoidal aircells and sphenoid sinus?

Answer 13

anterior and posterior ethmoidal nerves of nasociliary nerve of ophthalmic nerve V1

Question 14

What nerve subserves the skin over the nasion?

Answer 14

infratrochlear nerve of ophthalmic nerve V1

Question 15

What nerve subserves the skin of the forehead?

Answer 15

frontal nerve of ophthalmic nerve V1

Question 16

What nerve subserves a small patch of skin superior and lateral to the eye?

Answer 16

lacrimal nerve of ophthalmic nerve V1

Question 17

What nerve subserves the dura mater of medial portions of the anterior and middle cranial fossae?

Answer 17

meningeal branch of the maxillary nerve V2

Question 18

What nerve subserves the skin overlying the SUPERIOR zygoma?

Answer 18

zygomaticotemporal nerve of the zygomatic nerve

Question 19

What nerve subserves the skin overlying the INFERIOR zygoma?

Answer 19

zygomaticofacial nerve of the zygomatic nerve of the maxillary nerve V2

Question 20

What nerve subserves the oral mucosa of the HARD palate on the roof of the mouth?

Answer 20

greater palatine nerve of the ganglionic branches to the pterygopalatine ganglion of the maxillary nerve V2

Question 21

What nerve subserves the oral mucosa of the SOFT palate on the roof of the mouth?

Answer 21

lesser palatine nerve of the ganglionic branches to the pterygopalatine ganglion of the maxillary nerve V2

Question 22

What nerve subserves the nasal mucosa of the nasal septum?

Answer 22

nasopalatine nerve of the ganglionic branches to the pterygopalatine ganglion

Question 23

What nerve subserves the nasal mucosa of the middle and superior nasal conchae?

Answer 23

posterior superior lateral nasal branch of the maxillary nerve V2

Question 24

What nerves subserve the nasal mucosa of the maxillary sinus and the upper teeth?

Answer 24

posterior superior alveolar nerve
middle superior alveolar nerve
anterior superior alveolar nerve
all of the maxillary nerve V2

Question 25

What nerve subserves the skin on the lateral portions of the nose and anterior portions of the face from the lower eyelid inferior to the upper lip?

Answer 25

infraorbital nerve of the maxillary nerve V2

Question 26

What nerve subserves the dura mater of the lateral portions of the middle cranial fossa?

Answer 26

meningeal branch of the mandibular nerve V3

Question 27

What nerve subserves the lateral portions of the head, just anterior to the external auditory meatus?

Answer 27

auriculotemporal nerve of mandibular nerve V3

Question 28

What nerve subserves BOTH the inner and outer walls of the cheek?

Answer 28

buccal nerve of the mandibular nerve V3

Question 29

What nerve subserves the floor of the oral cavity?

Answer 29

lingual nerve of the mandibular nerve V3

Question 30

What nerve innervates (branchial motor AND sensory) the masseter muscle?

Answer 30

nerve to the masseter muscle, a muscular branch of the mandibular nerve V3

Question 31

What nerve innervates (branchial motor AND sensory) the temporalis muscle?

Answer 31

deep temporal nerves, muscular branches of the mandibular nerve V3

Question 32

What nerve innervates (branchial motor AND sensory) the medial pterygoid muscle?

Answer 32

nerve to the medial pterygoid muscle, a muscular branch of the mandibular nerve V3

Question 33

What nerve innervates (branchial motor AND sensory) the lateral pterygoid muscle?

Answer 33

nerve to the lateral pterygoid muscle, a muscular branch of the mandibular nerve V3

Question 34

What nerve innervates (branchial motor AND sensory) the tensor veli palatini muscle?

Answer 34

nerve to the tensor veli palatini muscle, a muscular branch of the mandibular nerve V3

Question 35

What nerve innervates (branchial motor AND sensory) the tensor tympani muscle?

Answer 35

nerve to the tensor tympani muscle, a muscular branch of the mandibular nerve V3

Question 36

What nerve innervates (branchial motor AND sensory) the mylohyoid muscle?

Answer 36

nerve to the mylohyoid muscle, from the inferior alveolar nerve of the mandibular nerve V3

Question 37

What nerve innervates (branchial motor AND sensory) the anterior belly of the digastric muscle?

Answer 37

nerve to the anterior belly of the digastric muscle, from the inferior alveolar nerve of the mandibular nerve V3

Question 38

What nerve subserves the roots of the inferior teeth and skin on the chin and superior to the lower lip?

Answer 38

the continuation of the inferior alveolar nerve of the mandibular nerve V3