B&b 11

Front 1

The sensory section of the BS is located where?

Back 1

LATERAL

Front 2

The motor section of the BS is located where?

Back 2

MEDIAL

Front 3

In the nerual tube which part is sensory and which part is motor?

Back 3

Dorsal = sensory

Ventral = motor

Front 4

What Splits CN motor nuclei (medial) from CN sensory nuclei (lateral)

Back 4

Sulcus Limitans

Front 5

What is pattern of the sensory CN nuclei columns?

Back 5

CONTINOUS

Front 6

What is pattern of motor CN nuclei column?

Back 6

DISCONTINUOUS

Front 7

How many discontinuous columns of CN motor nuclei are there?

Back 7

3 (on each side)

Front 8

What are the 3 discontinuous columns of the CN motor nuclei?

Back 8

1. Somatic

2. Visceral

3. Branchial

Front 9

What does the Branchial column innervate?

Back 9

Skeletal muscle that developed in the phayngeal/branchial punches

Front 10

The somatic column is located where?

Back 10

Most medial motor column

Front 11

The somatic column contains what CN nuclei?

Back 11

LMNs of CN III, IV, VI, XII

Innervates eye and tongue

Front 12

What is the vertical organization of the somatic column?

Back 12

Midbrain - CN III/IV

Pons = CN VI

Medulla = CN XII

Front 13

A laterally deviated eyeball (external strabismus) is caused by what?

Back 13

CN III lesion (patient can't adduct their eye)

Note: Patient may also have ptosis and parasympathetic defects

Front 14

The trochlear near innervates what?

Back 14

Superior Oblique which depresses, abducts, and intorts eye

Front 15

Diplopia when attemptimg to depress adducted eye and tilting of head AWAY from lesion is causes by what?

Back 15

CN IV lesion

Front 16

The abducens nerve innervates what?

Back 16

Lateral rectus

Front 17

What causes a medially deviated eyeball (internal strabismus)?

Back 17

CN VI lesion

Front 18

What causes ipsilateral paralysis of one half on the tongue and deviation of tongue TOWARD the side of lesion?

Back 18

CN XII lesion

Front 19

What 2 muscles have CONTRALATERAL innervation?

Back 19

Superior Rectus and Superior Oblique

Front 20

The intermediate motor column contains what CN nuclei?

Back 20

CN III, VII, IX, X

Front 21

The nucleus of Edinger Westphal is located where and has what function?

Back 21

Midbrain - pupil contriction and near response of CN III

Front 22

Initial signs of dilated pupil, loss of light reflex, and loss of near response ipsilateral to lesion is a result of what?

Back 22

CN III

Front 23

What visceral column nucelus is located in the pons?

Back 23

Superior Salivatory Nucleus

Front 24

What is the function of the Superior salivatory Nucleus?

Back 24

Lacrimation (CN VII)

Front 25

What 2 visceral column nuceli are located in the medulla?

Back 25

Inferior Salivatory Nucleus and Dorsal Motor Nucleus

Front 26

The inferior salivatory nucleus does what?

Back 26

Provides saliva via the otic ganglia (CN IX)

Front 27

The dorsal motor nucleus does what?

Back 27

CN X --> slow heart rate, constrict bronchial smooth muscles, promotes GI function

Front 28

What CN nuclei does the lateral column (branchial) contain?

Back 28

CN V, VII, IX, X

Front 29

What CN nuclei are located in the pons?

What is their function?

Back 29

CN V (mastication) and CN VII (Facial expression)

Front 30

Deviation of jaw results from what?

What way does it protrude?

Back 30

CN V lesion

Prodtrudes TOWARD the side of the lesion

Front 31

Bell's Palsy is caused by what?

Back 31

Lesion of CN VII

Front 32

What nucleus of the branchial column is in the medulla?

Back 32

Nucleus Ambiguus

CN IX, X

Front 33

How does CN VII exit the brainstem?

What clinical significance does this have?

Back 33

Loops around abducens (VI)

If tumor involves abducens (VI) will ALSO involve the facial nerve (VII)

Front 34

What sensory cranial nerve nuclei are found in the lateral part of the brainstem?

Back 34

Solitary nucleus, 3 trigeminal nuclei, and the vestibular and cochlear nuclei

Front 35

The solitary nucleus is located where?

Back 35

Medulla

Front 36

The superior (rostral) portion of the solitary nucleus has what function?

Back 36

TASTE (CN VII, IX, X)

Recall:
Anterior 2/3 = VII
Posterior 1/3 IX

Front 37

The solitary nucleus relays taste to where?

Back 37

Ventral Posterior Medial Nucleus (VPM) of the Thalmus, which projects to the somatosensory cortex

Front 38

The inferior (caudal) part of the solitary nucleus has what function?

Back 38

Monitors changes in BP and chemical content of blood

CN IX, X

Front 39

What may cause respiratory failure preceded by ataxis (irregular) breathing?

Back 39

Bilateral lesion of the solitary nuclei

Front 40

CN VIII gives rise to what 2 nuclei?

Back 40

Vestibular and Cochlear Nuclei

Front 41

The ventral cochlear nuclei project where?

Back 41

Bilaterally to neurons in the Superior Olivary Nucleus in the pons

Front 42

Superior Olivary Nucleus sends inputs to where?

Back 42

Inferior Colliculus

Front 43

Inferior Colliculus sends inputs to where?

Back 43

Medial Geniculate Body of the thalmus

Front 44

Vestibular Nuclei sends inputs where?

Back 44

Flocculnodular lobe of the cerebellum

Front 45

What is unique in terms of size of the trigeminal nuclei?

Back 45

Due to large length, should have trigeminal section in every brainstem section

Front 46

How many trigeminal sensory nuclei are there?

Back 46

3 for the 3 different sensory modalities

Front 47

What are the 3 trigeminal nuclei and their functions?

Back 47

1. Mesencephalic: proprioception of jaw

2. Main, Chief, or Principal: Touch of face

3. Spinal: pain and temp of face

Front 48

What trigeminal nucleus actually contains cell bodies?

Back 48

Mesencephalic - neural crest derivative that migrated into the brainstem

Front 49

Axons of the principal sensory neurons project where?

Back 49

VPM nucleus of the thalmus which then projects to the primary somatosensory cortex

Front 50

The spinal nucleus of V has how many components?

Back 50

3: Oral, interpolar part, and caudal part

Front 51

The oral part of the spinal nucleus receives what inputs?

Back 51

Tactile from face, scalp, oral cavity, and nasal cavity

Front 52

The interpolar part of the spinal nucleus receives what inputs?

Back 52

Pain and temp in teeth

Front 53

The caudal part of the spinal nucleus receives what inputs?

Back 53

Pain and Temp of face

Front 54

The axons arising from cells in all parts of spinal nucelus of V cross the brainstem and form what?

Back 54

The ventral trigeminal or trigeminothalamic tract

Front 55

The ventral trigeminothalamic tract joins what other tract and where does is synapse?

Back 55

Joins medial lemniscus and projects to the VPM

Front 56

The mesencephalic nucleus extends into the midbrain where?

Back 56

Lateral to the IVth ventricle and the cerebral aqueduct

Front 57

For pain and temp, the face has what kind of topography?

Back 57

Onion Skin

Front 58

How is the cerebellum connected to the brainstem?

Back 58

By the inferior, middle, and superior cerebellar peduncles

These convey axons into and out of cerebellum

Front 59

Medial vascular insult will affect what kind of CN?

Back 59

Motor

Front 60

Lateral vascular insult will affect what kind of CN?

Back 60

Mixed