half way quiz Flashcards
role of glutamate
most common excitatory NT in CNS
role of glycine
inhibitory
paralyses LMN in REM sleep
which symptoms are seen with brown sequard syndrome?
- loss of all modalities at level of lesion
- loss of contralateral spinothalamic modalities 1-2 levels below lesion. (opposite side)
> as neurones ascend 1-2 segments then decussate. - loss of dorsal column below level of lesion (same side)
astrocytes role
maintenance of BBB
microglia role
immune type cell (like macrophages)
oligodendrocytes role
myelinate CNS axons
meningomyelocoele contains?
CSF and spinal cord
myelo=cord
lateral funiculus contains which tracts
corticospinal and spinothalamic
dorsal funiculus contains which tracts
dorsal column medial lemniscus system
thalamus is part of which division of CNS
dienceophalon (division of forebrain)
upper vs lower UMN innervation
upper = bilateral UMN innervation > spared in strokes.
lower = contralateral UMN innervation
thalamoperformator arteries branch of?
posterior cerebral
role of medial longitudinal fasiculus?
helps to move eye movements together
bridging veins transverse which space
subdural space
> subdural haemorrhage elderly prone from mild trauma due to cortical shrinkage
emissary veins role
drains scalp into dural venous sinus
cerebellar peduncles role
attach cerebellum to brainstem
cerebral peduncles role and alternative name
crus cerebri
connect the cerebral hemispheres to the brainstem
third ventricle drains into
the cerebral aqueduct THEN into 4th ventricle
what is a funiculus?
subdivision of a tract
> contains both ascending and descending axons
which test is for gluteus medius weakness
trendelenburg
which test is for sensory ataxia
rhombergs
superior retinal fibres go which lobe
up parietal lobe
INFERIOR retinal fibres go which lobe
inferiorly thru temporal lobe
which level does the spinal cord terminate
L1/L2
