Cranial Nerves

Question 1

How does branchial motor differ from somatomotor?

Answer 1

(Come from different parts of the embryo)
Brachial- branchial arches of embryo
Somatomotor- comes from somites of the embryo

Question 2

Does the olfactory nerve travel through the thalamus

Answer 2

No

Question 3

What is the bone that the first order neurons (olfactory nerves) go through

Answer 3

Cribaform plate

Question 4

Cerebral connection for smell

Answer 4

Medial temporal lobe

Question 5

visual acuity

Answer 5

how clear or sharp you see something

Question 6

Pat of the eye that is a muscle sphincter

Answer 6

iris

Question 7

part of the responsible for central vision

Answer 7

Macula lute

Question 8

Purpose of the retinogeniculocalcarine pathway

Answer 8

conscious vision

Question 9

Anopsia

Answer 9

Loss of vision in one whole eye

damage between eye ball & optic chiasm

Question 10

Hemianopsia

Answer 10

Lose half of vision in both eyes

damage between optic chiasm & thalamus

Question 11

Quadrantonanopsia

Answer 11

Lose a quadrant of vision in both eyes

damage occurs at myers lope

Question 12

Two components that are in cranial nerves but not in spinal nerves

Answer 12

Brachial Motor

Special Sensory

Question 13

Loss of Direct (R)

Answer 13

Damage to R occulomotor

Question 14

Loss of Consensual (L)

Answer 14

Damage to L occulomotor

Question 15

Loss of Neither PLR

Answer 15

After optic chiasm in optic tract

Question 16

Loss of Both PLR

Answer 16

between eyeball & optic chiasm

Question 17

Damage to the left optic tract between the optic chiasm and the lateral geniculate body would result in (vision deficit)

Answer 17

Right hemianopsia

Question 18

Trochlear nerve innervates what muscle

Answer 18

Superior oblique

Question 19

The medial longitudinal fasciculus connects

Answer 19

The 3 motor nuclei to the vestibular nuclei, accessory nuclei, and superior coliculis

Question 20

Air hits your eye, what cranial nerve carries the afferent info for the blink reflex

Answer 20

Trigeminal

Question 21

Pathway for the accommodation reflex

Answer 21

Retonogeniculioclarine pathway

Question 22

Conjugate Movements

Answer 22

eyes move in the same direction

Question 23

Vergent mvt’s

Answer 23

eyes move in different directions

Question 24

Pursuit mvt’s

Answer 24

slow smooth mvt following a moving stimulus

Question 25

Saccadic mvt’s

Answer 25

fast jerkey mvt, following a moving stimulus

Question 26

Reading is an example of what eye mvt

Answer 26

saccadic

Question 27

What two eye movements do you use when you are watching an object as it approaches your nose

Answer 27

Vergent & Pursuit

Question 28

Never that innervates the muscles of mastication

Answer 28

trigeminal

Question 29

What nerves have bilateral innervation

Answer 29

Trigeminal, facial

Question 30

3 situations when nystagmus is normal

Answer 30

End range of vision
Post-rotary (spinning around)
optokinetic: following a moving object (train)

Question 31

What two nerves innervate salivatory glands

Answer 31

glossopharyngeal & facial

Question 32

describe VOR

Answer 32

maintaining visual fixation on a still target while moving your head

Question 33

two nerves that provide sensory information about taste

Answer 33

glossopharyngeal, facial

Question 34

Conductive deafness

Answer 34

louder on same side

Question 35

Sensorineural deafness

Answer 35

louder on opposite side

nerve damage

Question 36

How does the cochlear nerve transmit information about the loudness of the sound

Answer 36

Dependent on the frequency of action potentails

Question 37

Part of the thalamus that receives information about hearing

Answer 37

Medial geniculate body

Question 38

UMN lesion of the hypoglossal nerve, tongue deviates to?

Answer 38

The weaker side

Question 39

The LMN’s of the accessory nerve receives what kind on innervation from the UMN’s

Answer 39

contralateral