STT / PC tract Flashcards
spinothalamic tract travels where
up SC within anterior part of lateral column
which tract is spinothalamic tract part of
anterolateral system
function of anterolateral system
awareness of pain/temp
modulate pain / temp
spinothalamic fibers transmit info on what
non discriminatory touch
pain
touch
which is medial fas can or fas grant
gracil
fibres carrying info from lower body found were
laterally
fibres from higher levels found where
medially
what supplies anterior 2/3 of SC
anterior spinal artery
secondary neurons in spinothalmic tract cross where
contralateral side via anterior white commissure
is lissauer or gelatinous closer to the outside
Lis
secondary neurons associeer with lis or gel
gel
Top down levels of spinothalamic tract
Thalamus, midbrain, pons, rostral medulla, caudal medulla, SC
where does spinothalamic tract terminate
-ventral posterolateral nucleus of thal (VPL)
-primary somatosensory cortex
(mid grey wide wings)
where does spinothalamic tract lie in mid brain
posterior (litte, top and wide)
where is spinothalamic tract in pons
lateral to medial lem in posterior (top bottom corners)
where is spinothalamic tract in rostral medulla
between olivary and trigeminal (top lobe bottom corner)
where is spinothalamic tract in caudal medulla
adjacent to pyramids (top lobe bottom corners)
what do pyramids contain
corticospinal tract
where do spinal gang travel up down 1-2 sets
lissauers
where do axons of seconary neutrons cross midline
anterior white commissure
posterior column medial lem travels up The SC within where
posterior column
whats more medial grace or cune
grac
fibres of posterior column transmit what info
disc touch
pressure
vibration
proprio
lower level fibres in posterior column med or lat
medially (grace)
higher level fibres in posterior column med or lat
later (cune)
posterior spinal arteries supply what
posterior 1/3 of SC
PCML axons enter SC where and pass where
from spinal ganglion
IPSILATERAL
rostral fibers above T6 enter where
cuneatus
casual fibres below t6 enter where
gracilis
above t6 or below t6
above is rostal
below is caudal
where do primary axons terminate
caudal medulla
PCML cross midline where
caudal medulla
tract caudal medulla PCML
top circles
tract rostral medulla PCML
middle
tract pons PCML
cups under top lobe
tract midbrain PCML
above middle circles
tract thalamus PCML
middle wings
the medial lemisnuc terminates where
VPL of thalamus
secondary neutrons of PCML cross midline at
arcuate fibers
