Trigeminal System

Question 1

how does one study the CNS structures

Answer 1

anatomically
electrophysiological
neurological

Question 2

what ways are restricted to animal studies for looking CNS structure

Answer 2

anatomical

electrophysiological

Question 3

what ways are restricted to human studies for looking CNS structure

Answer 3

neurological

Question 4

what are the anatomical was of studying the CNS

Answer 4

dissection of brain
structure of nuclei
where do nerves go and synapse
where do second order cells go

Question 5

what are the electrophysiological ways of studying the CNS

Answer 5

what types of peripheral stimuli excite cells in the nuclei

Question 6

what are the neurological ways of studying the CNS

Answer 6

what happens if one or more nucleus destroyed by disease

Question 7

what is the trigeminal sensory pathway

Answer 7

primary afferent neurone

trigger ganglion

trigeminal senhor nulei

trigemini-thalamic tract

thalamus

somatosensory cortes

Question 8

what are the branches of the sensory part of the trigeminal nerve

Answer 8

ophthalmic

maxillary

mandibular

Question 9

what is a ganglion

Answer 9

collection of nerve cells bodies in the PNS

Question 10

what are the ganglia associated with the peripheral trigeminal nerve

Answer 10

trigemina ganglion

mesencephalic nucleus

Question 11

what are the roots of the tirgeminal nerve

Answer 11

sensory

motor

Question 12

what are the component of the trigeminal sensory nucleus

Answer 12

nucleus oralis
nucleus interpolaris
nucleus caudalis

Question 13

what happens when there is damage to nucleus caudalis

Answer 13

trigeminal tractotomy

• • loss ipsilateral facial pain, temp
• still feel touch

Question 14

what is the N. caudalis the site for

Answer 14

for synapses for pain, hot and cold

Question 15

what is the experimental evidence as to what the nucleus oralis does

Answer 15

nociceptive inputs

more for reflexes rater than sensation - jaw jerk

Question 16

what happens if there is damage the main sensory nucleus

Answer 16

ipsilateral loss touch to face
still fee pain, hot and cold
may also have other CNS lesions

Question 17

what is the MSN the site for

Answer 17

synapse for touch

Question 18

what is the function for nucleus interpolaris

Answer 18

reflexes??

Question 19

what are the efferent and afferent fibres of th motor root of trigemini

Answer 19

efferent - muscle of mastication

afferent - from all muscle spindles and some PDLM’s

Question 20

what do the muscle kindles give

Answer 20

indiction length and stretch

Question 21

what is PDLM

Answer 21

periodontal ligament

Question 22

what are the cell bodies for in the trigem mesencephalic nucleus

Answer 22

jaw muscle spindle afferents

mechanoreceptorafferents fromPDLM

Question 23

where are the primary afferent cell bodies fro Vmes

Answer 23

wishing nervous system unique

Question 24

are thee synapses in the Vmes

Answer 24

no

Question 25

where do the neves assc with the Vmes synapse

Answer 25

V motor nucleus

Question 26

where is the trigem motor nucleus

Answer 26

medial to the MSN in the pons

Question 27

what doe the trigem motor nucleus receive inputs from

Answer 27

Vmes

motor cortex

Question 28

what are the efferents for the V motor nucleus

Answer 28

exit via motor root mandibular div

supply muscles mast