CN and Nuclei I and II Flashcards Preview

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Flashcards in CN and Nuclei I and II Deck (50):
1

Which CN's don't have discrete nuclei in the brainstem?

CN's 1 and 2

2

General breakdown of where CN's are located in brainstem.

MDB: III and IV

PONS: V, VI, VII, and VIII

MED: ix, X,XI and XII

3

All sympathetic things done by the motor nucleus are done by...

CN X (Dorsal Motor X aka DMX)

4

Function of Edinger-Westphal nucleus

GVE for CN III, (pupil small and lens fat)

5

Function of Oculomotor nucleus

GSE for CN III

6

Function of Trochlear nucleus

GSE for CN IV

7

Function of motor nucleus

SVE for CN V (muscles of mastication etc.)

8

Function of Abducens nucleus

GSE for CN VI

9

Function of Superior salivatory nucleus

GVE for CN VII (lacrimal, sub-lingual and sub-maxillary)

10

Function of Facial nucleus

SVE for CN VII (muscles of face exp. etc.)

11

Function of Inferior salivatory nucleus

GVE for CN IX (parotid)

12

Function of Hypoglossal nucleus

GSE for CN XII (muscles of the tongue)

13

Function of Dorsal motor nucleus

GVE for CN X (to thorax and abdomen)

14

Function of Nucleus ambiguus

SVE for CN X (larynx) and IX (stylopharyngeus)

15

Function of Spinal accessory nucleus

SVE for CN XI (trapezius and SCM)

16

Function of Mesencephalic nucleus

GSA, jaw-jerk reflex for CN V

17

Function of Main sensory nucleus

GSA, for CN V (similar to dorsal column nuclei). Relays position, vibration and 2-point discrimination for THE HEAD.

i.e. position sense for the head.

18

Function of Cochlear/vestibular n.

SSA for CN VIII

19

Function of Spinal nucleus

GSA for V (similar to nucleus proprius) Relays pain and temp for head via spinal thalamic tract. Relays pain and temp for ear pinna for CN's VII, IX and X

20

Function of Nucleus of Solitary Tract

Only nucleus that has 2 components:

SVA (taste)- VII, IX and X

GVA for VII (palate-deep sensation), IX (palate and carotid sinus), and X (pain and stretch-viscera and aortic baroreceptors)

21

Basics of the CN I

Include attachment and nucleus of origin or termination.

Run through cribiform plate and enter olfactory bulb. Then synapse near hippocampus.

Attachment: Olfactory bulb
N-of-T: SVA-Olfactory mucosa

22

Attachment and nucleus of origin or termination for CN II

Att.: Optic chiasma

N-of-T: SSA- Lateral geniculate body

23

Where does the optic nerve ultimately synapse?

Occipital cortex (BROADMANN'S AREA 17 surrounding the calcarine fissure).

24

Fibers for vision course back in...

Optic radiations

25

Attachment and nucleus of origin or termination for CN III

Att.: Sulcus on walls of interpeduncular fossa

N-of-O:
(1) For GVE- Edinger-Westphal
(2) For GSE- Oculomotor nucleus

26

Attachment and nucleus of origin or termination for CN IV

Att.: Superior medullary velum

N-of-O: GSE-Trochlear nucleus

27

Special things with the trochlear nerve.

Has the longest intracranial exposure. Only nerve to cross and originate from dorsum of the brainstem.

28

Attachment and nucleus of origin or termination for CN V.

Att.: Lateral part of the pons

N-of-O and T:
(1) For GSA- Sensory nucleus of nerve V
(2) For SVE- Motor nucleus of nerve V

29

Attachment and nucleus of origin or termination for CN VI

Att.: Sulcus between pons and medulla on anterior surface

N-of-O:GSE- Abducens nucleus (pons)

30

Attachment and nucleus of origin or termination for CN VII

Att.: Cerebellomedullary pontine angle

N-of-O or T: ALL PONS
(1) GVA- nuc solitarius
(2) SVA- nuc solitarius
(3) GSA- sensory nuc of N5
(4) GVE- sup. salivatory nuc
(5) SVE- motor nuc of 7

31

Attachment and nucleus of origin or termination for CN VIII

Att.: Cerebellomedullary pontine angle

N-of-T: Both SSA
(a) Cochlear- cochlear nuclei
(b) Vestibular- vestibular nuclei

32

Attachment and nucleus of origin or termination for CN IX

Att.: Post. lateral (olivary) sulcus

N-of-O or T: ALL MEDULLA
(1) GVA- nuc solitarius
(2) SVA- nuc solitarius
(3) GSA- sensory nuc of N5
(4) GVE- inf.. salivatory nuc
(5) SVE- nuc. ambiguus

33

Attachment and nucleus of origin or termination for CN X

Att.: Post. lateral (olivary) sulcus

N-of-O or T: ALL MEDULLA
(1) GVA- nuc solitarius
(2) SVA- nuc solitarius
(3) GSA- sensory nuc of N5
(4) GVE- dors. motor nuc of 10
(5) SVE- nuc. ambiguus

34

Attachment and nucleus of origin or termination for CN XI

Att.: Upper cervical spinal between post. and ant. roots

N-of-O: SVE- Accessory nucleus (SPINAL CORD)

35

Attachment and nucleus of origin or termination for CN XII

Att.: Ant. Lat. (olivary) sulcus

N-of-O: GSE- hypoglossal nuc. medulla

36

Principal sensory of V is similar to...

N. Cuneatus

37

Spinal of V is similar to...

N. Proprius

38

Mesencephalic N. is similar to...

Dorsal root ganglian (sucked into brainstem)

39

The spinal nucleus receives info about...

Pain

40

The main sensory nucleus receives info about...

Touch and jaw position

41

What makes up the facial colliculus?

This bump is formed as a result of CN VII coursing over CN VI

42

Affect of unilateral corticobulbar damage.

Upper motor neurons

Will spare the upper face on affected side because the facial motor neurons in the facial motor nucleus receive bilateral corticobulbar input. The lower face receives unilateral corticobulbar input only.

43

What happens if the VII nucleus or nerve is destroyed?

You have killed the final common pathway or lower motor neurons and total paralysis will occur on the affected side.

44

What's unique about the path of the facial nerve?

Comes out of facial motor nucleus and loops around the abducens nucleus.

45

Sulcus limitans

separates sensory nuclei from motor nuclei (motor-medial, sensory-lateral)

46

Lump on back of thalamus that helps with vision

Lateral geniculus

47

"Cheerio"

Nuc. Solitarius. The tract is in the center of the nucleus.

48

Basal is affliated with...

Alar is affliated with...

MOTOR

SENSORY

49

Golf ball on tee

Lateral lemniscus=tee

Inferior colliculus= golf ball

50

VPM

Nucleus of the thalamus, which conveys info from the Trigeminal nerve (GSA V) and Nuc of Solitary, to 312