CN and Nuclei I and II Flashcards Preview

MHD2 Neuro > CN and Nuclei I and II > Flashcards

Flashcards in CN and Nuclei I and II Deck (50)
Loading flashcards...
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