Nuclei of cranial nerves Brainstem

Question 1

everything medial to sulcus limitans is considered what?

Answer 1

everything medial is motor groups (everything lateral is sensory)

Question 2

What is in the 1st column General somatic efferent (4)

Answer 2

Occulomotor nuc
Trochlear nuc
Abducens nuc
Hypoglossal nuc

Question 3

(1)Occulomotor loc, input, output, palsy

Answer 3

L- midbrain

I- Bilat corticomesenphalic bundles + MLF (medial vestibular nuc)

O- Occulomotor m

P- leads to ptosis of sup eyelid and down + out

Question 4

(3) trochlear nuc loc, input, output, palsy

Answer 4

L- midbrain

i- Bilat Corticomesenphalic bundels + MLF

O- CN4 CL

Palsy-extorted and minimallly up/ up + in

Question 5

(5) Abducens nuc, loc, input, output, palsy

Answer 5

L- pons

i- Bilat corticomesenphalic bundles + MFL

O- Lat rectus

Palsy- inward pos of eye

Question 6

(11) Hypoglossal nuc, loc, input, output, palsy

Answer 6

L- medulla

i- somatomotor cortex CL dominant

O- mm of tongue

Palsy- in palsy would move to affected side

Question 7

What is in the 2nd column general Visceral efferent (4)

Answer 7

Edingar westphal nuc
Sup salivatory
Inf Salvitory
Dorsal nuc of vagus

Question 8

(2) edingar Westphal nuc, loc, input, output, palsy

Answer 8

L- midbrain

i- Pre tectal nuc

O- cilary ganglion for pupil constriction/accomidation

P- impaired photomotor reflex (direct + indirect)

Question 9

(6) Sup Salviatory nuc, loc, input, output

Answer 9

L- Pons

i- Primary motor cortex

O- Parasympathetic that go to CN7 and pterygopalantine + Submandibilar ganglion

Question 10

(13) Inf salviatory nuc, loc, input, output

Answer 10

L- medulla

I- primary motor cotex

O- Preganglionic parasympathetic that go to CN9 Otic ganglion

Question 11

(12) Dorsal nuc of Vagus loc, in, out

Answer 11

L- medulla

i- primary motor cortex

o- Preganglionic parasympathetic fibres that join vagus

Question 12

Whats in 3rd column Special visceral efferent

Answer 12

Motor nuc of trigeminal
motor facial n
ambiguous nuc

Question 13

(7) Motor nuc of trigeminal loc, in, out

Answer 13

L- Pons

I-Primary motor cortex

O- Trigeminal n (massicator mm)

Question 14

(8) Motor n of facial loc, in (cranial + caudal), out, palsy

Answer 14

l- Pons

I- Crainial from bilat primary motor cortex, Caudal from CL primary motor cortex

O- crainial supplies upper face, caudal lower face

P- R motor cotex would affect only left lower face

Question 15

(14) ambigous nuc loc, in, out, palsy

Answer 15

Loc- medulla

I- bilat motor cortex

O- Upper contribute to CN9, middle to vagus and lower to CN11

P- uvula will go to healthy side

Question 16

(15a/b) Solitary nucleus loc, what nucleuses and function

Answer 16

loc- medulla

Gustatory nuc- for taste sensations

Cardiorespiratory nuc- From CN 9/10 important for regulation of respiration

Question 17

(16) vestibular nuc loc, in, out

Answer 17

loc- pons/medulla (4 of them)

in- Vestibular component of CN 8

O- Vestibulospinal tracts and MLF

Question 18

(17) Cochlear nuc loc, in, out

Answer 18

loc- medulla
in- auditory component go CN8

O- Lat lamnicus (50/50 IL and CL)

Question 19

(4) mesencephalic n of trigeminal loc, I

Answer 19

loc- midbrain/pons

I- receives signals from head for proprioception

Question 20

(18) Spinal root of trigeminal loc, I

Answer 20

loc- Medulla

I- Pain, temp input

Question 21

(9) chief pontine nuc loc input

Answer 21

pons

I- General touch sensation