sensory and motor pathways in the CNS Flashcards
how are sensory pathways organised
somatically
what is the trigeminal sensory pathway made up of
primary sensory neruone
second order
third order
where is the primary sensory neurone found in the trigenmial
receptor to sensory or spinal nucleus
where is the second order neurone found in the trigenmial
trigeminal nucleus to VPM nucleus of thalamus
where is the third order neurone found in the trigenmial
VPM nucleus in thalamus to cortex (post central gyrus)
where is the spinal trigeminal nucleus found
medulla
what are motor pathways split into
upper motor neurone
lower motor neurone
where does the lower motor neurone go from and to
brainstem or SC to muscle
what defines upper motor neurones
any neurones carrying info within the CNS making up motor pathways
what s the distinction of lower motor nruoens
neurones conveying motor infro from brainstem or SC to muscle
where is the cell body of lower motor neurones found
ventral horn of SC
where can lower motor neurones received info from
direct/indirect corticospinal pathways
tectospinal pathways
vestibular pathways
where of upper motor neurones cross to
contralateral side
what makes up the basal ganglis
large nuclei of grey matter in the cerebral hemispheres (and substantial nigra)
what do basal ganglia do
connect sensory ares to motor areas via loop systems
suppress unwanted movement/amplify intended movement
