Neuroanatomy 4

Question 1

all cranial nerves exit ___ except…

Answer 1

anteriorly
IV = posteriorly
VIII = laterally

Question 2

all motor neurons arise from…

Answer 2

a motor nucleus in the brainstem

Question 3

every single sensory neuron will arise outside of the CNS T or F

Answer 3

T, they will arise from ganglia

Question 4

what sensory cranial nerve does NOT synapse in the thalamus prior to reaching the cortex

Answer 4

olfactory nerve

Question 5

axons of the olfactory nerve extend through the ___ __ to reach the ___ ____

Answer 5

cribriform plate

olfactory bulb

Question 6

what lobe(s) is the primary olfactory complex located in?

Answer 6

frontal lobe with a small extension into temporal lobe

Question 7

what cranial nerves’ nuclei are found near the midline of the brainstem?

Answer 7

CN III, IV, VI, XII (motor)

Question 8

what does the edinger westphal nucleus control?

Answer 8

ciliary ganglion

Question 9

what nerves emerge from the brainstem close to the midline and why?

Answer 9

III, IV, VI, XII because their nuclei originate there

Question 10

where does CNXI arise from?

Answer 10

cervical spinal cord

Question 11

the spinal accessory nerve enters via which foramen and exists via…

Answer 11

foramen magnum

jugular foramen

Question 12

CNV provides motor control to… (5)

Answer 12

muscles of mastication
tensor tympani
mylohyoid
ant belly of digastric
tensor veli palatini

Question 13

how long are the trigeminal nerve’s sensory nuclei?

Answer 13

extend from midbrain down to C2

Question 14

mesencephalon is another word for..

Answer 14

midbrain

Question 15

name the trigeminal nerve’s 3 sensory nuclei from proximal to distal and their function

Answer 15

mesencephalic for proprioception
pontine/principal nucleus for touch
spinal nucleus for pain and temp sensation

Question 16

what nucleus is in charge of the motor function of the muscles of mastication?

Answer 16

motor nucleus in the pons

Question 17

facial nerve motor functions

Answer 17

stapedius

muscles of facial expression

Question 18

facial nerve parasymp functions

Answer 18

pterygopalatine

submandibular ganglia

Question 19

sensory function of facial nerve

Answer 19

taste to front 2/3 of tongue

Question 20

sensory function of CNIX

Answer 20

pain/temp from posterior tongue, upper pharynx and eustachian tube
taste to post 1/3 tongue

Question 21

parasympathetic functions of CNIX

Answer 21

parotid gland

Question 22

nerve supply to stylopharyngeus

Answer 22

CNIX

Question 23

facial nerve uses _ motor nuclei, name them

Answer 23

4
salivatory nucleus
facial motor nucleus
solitary nucleus for taste
spinal trigeminal nucleus

Question 24

glossopharyngeal uses _ motor nuclei, name them

Answer 24

4
solitary nucleus
spinal trigeminal nucleus
nucleus ambiguus
inferior salivatory nerve

Question 25

what does the solitary nucleus manage?

Answer 25

taste

Question 26

what does the spinal trigeminal nucleus manage?

Answer 26

somatosensation of the ear

Question 27

vagus nerve uses _ motor nuclei, name them

Answer 27

4:
dorsal nucleus
solitary nucleus
spinal trigeminal nucleus
nucleus ambiguus

Question 28

function of the dorsal nucleus?

Answer 28

motor parasympathetic innervation

Question 29

the solitary nucleus is used by what cranial nerves?

Answer 29

VII
IX
X

Question 30

salivatory nuclei are used by what cranial nerves?

Answer 30

VII

IX

Question 31

what does the nucleus ambiguus do?

Answer 31

contains motor efferents to muscles of pharynx, larynx and upper oesophagus

Question 32

what cranial nerves use the nucleus ambiguus?

Answer 32

CN IX

CN X

Question 33

where is the nucleus ambiguus located?

Answer 33

lower pons and upper medulla

Question 34

where is the solitary nucleus located?

Answer 34

medulla

Question 35

name the part of the corticospinal tract that is motor to cranial nerves

Answer 35

corticobulbar tract

Question 36

what controls the parasympathetic input to cranial nerves

Answer 36

hypothalamus