CN V

Question 1

CN V - ______

Answer 1

trigeminal nerve

Question 2

CN V is the _____ CN

Answer 2

largest

Question 3

function of CN V

Answer 3

motor and sensory

Question 4

what are the 3 divisions

Answer 4

V1 - ophthalmic
V2 - maxillary
V3 - mandibular

Question 5

GSA of V1

Answer 5

cornea, skin of forehead, scalp, eyelids, and nose

mucous membrane of paranasal sinuses and nasal cavity

Question 6

exit of V1

Answer 6

sup orbital fissure

Question 7

exit of V2

Answer 7

foramen rotundum

Question 8

GSA of V2

Answer 8

skin of face over maxilla

teeth of upper jaw

mucous membrane of nose, maxillary sinus and palate

Question 9

GSA of V3

Answer 9

skin of cheek, skin over mandible and side of head, teeth of lower jaw and TMJ

mucous membrane of mouth and anterior part of tongue

Question 10

SVE of V3

Answer 10

muscles of mastication mylohyoid, anterior belly digastric muscle, tensor palatini and tensor tympani

Question 11

exit of V3

Answer 11

foramen ovale

Question 12

trigeminal nuclei receive GSA inputs from _____

Answer 12

CN V, VII, IX and X

Question 13

lies in posterior part of pons, lateral to motor nucleus

Answer 13

main sensory nucleus

Question 14

main sensory nucleus is for fine touch, dental pressure through _____

Answer 14

trigeminal lemniscus to VPM

Question 15

trigeminal nucleus crosses to opposite side of the brainstem to ascend with the ____ towards _____

Answer 15

ascend with the medial lemniscus towards the thalamus to VPM

Question 16

smaller pathway that does not decussate and travel to ipsilateral VPM

Answer 16

Dorsal Trigeminothalamic Tract

Question 17

_____ travel to face area of primary sensory area

Answer 17

tertiary neurons

Question 18

Dorsal Trigeminothalamic Tract conveys

Answer 18

touch and pressure sensation from oral cavity including teeth

Question 19

Spinal Nucleus extends as far as _____

Answer 19

C2 segment

Question 20

Crude touch, pain and temperature through ______

Answer 20

trigeminothalamic tract to VPM

Question 21

column of unipolar cells in the lateral part of the periaqueductal gray matter

Answer 21

mesencephalic nuc

Question 22

mesencephalic nuc function

Answer 22

Proprioception from muscles of mastication, tongue and possibly from EOMs

Question 23

found in upper to mid pons near the level of trigeminal nerve exit from brainstem

Answer 23

motor nuc

Question 24

motor nuc ise medial to _____

Answer 24

main sensory nucleus

Question 25

motor root runs inferomedial to trigeminal ganglion floor of ______ then joins V3 to exit via foramen ovale

Answer 25

Meckel’s cave

Question 26

motor nuc supplies ____

Answer 26

muscles of mastication and smaller muscles (tensor tympani, tensor veli palatini, mylohyoid and anterior belly of digastric)

Question 27

small fossa just posterior and inferolateral to cavernous sinus

Answer 27

Meckel’s cave

Question 28

arise from anterior border of the ganglion

Answer 28

Ophthalmic, maxillary and mandibular nerves

Question 29

half of trigeminal senosry ganglion divide to ascending and descending fibers as they enter the

Answer 29

pons

Question 30

anseding branches terminate in

Answer 30

main sensory nucleus

Question 31

anseding branches is for

Answer 31

Touch and pressure

Question 32

descending branches terminate

Answer 32

spinal nucleus

Question 33

descending branches is for

Answer 33

Pain and temperature

Question 34

V1 terminates

Answer 34

inferior part of spinal nucleus

Question 35

V2 termiantes

Answer 35

middle part of spinal nucleus

Question 36

V3 terminates

Answer 36

superior part of spinal nucleus

Question 37

fibers from mesencephalic nucleus formi

Answer 37

monosynaptic reflex arc