Flashcards in General Structure Nervous System Deck (46):
PNS made of two things
why is white matter white?
due to myelinated (fat) axons and glia
why is grey matter grey?
dendrites, somata and glia
L and R hemispheres of Cerebrum split by?
What are the ridges?
What are the grooves?
surface of cerebrum is called the?
cerebrum is site of 4 big things
What does the central sulcus divide?
frontal and parietal lobes
What does the lateral sulcus divide?
temporal from frontal/parietal
Brodmann's Areas are based on what differences?
cellular differences in organisation
PET scans look at?
areas of high metabolic activity
how many layers in cortex? thickness of cortex?
left and right cortices linked where?
Cerebellum does 2 things to motor
compares intention to execution
Basal Ganglia is where?
Basal Ganglia important for?
Damaged Basal Ganglia leads to what 2 diseases?
Thalamic nuclei project in 3 ways:
project globally: arousal/sleep
what controls pituitary?
what controls facial muscles and sensation?
what controls cardiorespiratory system?
how does the brainstem controls facial muscles and sensation?
via 10 of the 12 cranial nerves
Cranial nerves can be motor and/or sensory?
CNS made up of two things:
spinal cord connects to?
Dorsal horns mainly for?
ventral horns mainly for?
spinal cord: where is grey, where is white matter?
grey in middle, surrounded by white
in brain: where is grey, where is white matter?
white in middle, surrounded by grey
spinal cord ends at what level?
spinal nerve is formed by what two things?
dorsal and ventral roots
dorsal root ganglion is what?
collection of sensory nerve cell bodies, on axon to periphery, one to dorsal horn
do cranial nerves have ganglia?
yep, cranial nerve ganglia
3 kinds of peripheral nerves:
where is CSF made?
choroid plexus in the ventricles
where does CSF flow out of?
CSF acts as what to brain?
3 meninges are?
CSF fills what area in the meninges? how is it reabsorbed?
reabsorbed by veins at arachnoid granulations
Falx and Tentorium divide what?
Falx: L&R hemispheres
Tentorium: cerebellum from occipital lobe
BBB formed by what cells?
endothelial cells of capillaries
BBB of capillaries are special how? 3 reasons
lack pinocytotic transfer
very tight junctions
mostly active transport
BBB good with fat or water soluble?
What is the lentiform nucleus made up of?