Trigeminal System Flashcards
how does one study the CNS structures
anatomically
electrophysiological
neurological
what ways are restricted to animal studies for looking CNS structure
anatomical
electrophysiological
what ways are restricted to human studies for looking CNS structure
neurological
what are the anatomical was of studying the CNS
dissection of brain
structure of nuclei
where do nerves go and synapse
where do second order cells go
what are the electrophysiological ways of studying the CNS
what types of peripheral stimuli excite cells in the nuclei
what are the neurological ways of studying the CNS
what happens if one or more nucleus destroyed by disease
what is the trigeminal sensory pathway
primary afferent neurone
trigger ganglion
trigeminal senhor nulei
trigemini-thalamic tract
thalamus
somatosensory cortes
what are the branches of the sensory part of the trigeminal nerve
ophthalmic
maxillary
mandibular
what is a ganglion
collection of nerve cells bodies in the PNS
what are the ganglia associated with the peripheral trigeminal nerve
trigemina ganglion
mesencephalic nucleus
what are the roots of the tirgeminal nerve
sensory
motor
what are the component of the trigeminal sensory nucleus
nucleus oralis
nucleus interpolaris
nucleus caudalis
what happens when there is damage to nucleus caudalis
trigeminal tractotomy
- loss ipsilateral facial pain, temp
- still feel touch
what is the N. caudalis the site for
for synapses for pain, hot and cold
what is the experimental evidence as to what the nucleus oralis does
nociceptive inputs
more for reflexes rater than sensation - jaw jerk
what happens if there is damage the main sensory nucleus
ipsilateral loss touch to face
still fee pain, hot and cold
may also have other CNS lesions
what is the MSN the site for
synapse for touch
what is the function for nucleus interpolaris
reflexes??
what are the efferent and afferent fibres of th motor root of trigemini
efferent - muscle of mastication
afferent - from all muscle spindles and some PDLM’s
what do the muscle kindles give
indiction length and stretch
what is PDLM
periodontal ligament
what are the cell bodies for in the trigem mesencephalic nucleus
jaw muscle spindle afferents
mechanoreceptorafferents fromPDLM
where are the primary afferent cell bodies fro Vmes
wishing nervous system unique
are thee synapses in the Vmes
no
where do the neves assc with the Vmes synapse
V motor nucleus
where is the trigem motor nucleus
medial to the MSN in the pons
what doe the trigem motor nucleus receive inputs from
Vmes
motor cortex
what are the efferents for the V motor nucleus
exit via motor root mandibular div
supply muscles mast
