CNS Flashcards
(19 cards)
what are the 5 lobes of the brain for
frontal - voluntary motor movement parietal - sensory control occipital - vision temporal - hearing and memory limbic/diecephalon - survival/emotion
3 main fissures of the brain
1 - longitudinal
2- lateral
3 - transverse
levels of protection of the brain
cranium/skull
3 meninges
csf
3 layers of meninges - start with outermost
dura mater
arachnoid
pia mater
2 folds of the dura mater meninges
falx cerebri
tentorium cerebelli
2 main components of basal ganglia
striatum and globus pallidus
what makes up striatum of basal ganglia
putamen
caudate nuclei
role of thalamus
coordinates sensory signals
sensory relay centre
role of corpus callosum
connects left and right hemispheres
role of Peripheral NS
collects sensory input and integrates through CNS to produce motor output/response
how mant neurons in somatic NS
1 motor neuron
how many neurons in autonomic NS
2
pre and post ganglionic
describe neurons of sympathetic NS
1 short pre ganglionic
1 long post ganglionic
ganglion very close to spinal cord - far from effector organs
desrcibe neurons of parasympathetic NS
1 long pre-ganglionic
1 short post-ganglionic
ganglion far from spinal cord - close to effector organs
polarity of neurons
how many branches project from cell body
glia of peripheral NS
schwann cells
satellite cells
where do nerves innervating sympathetic NS sit
mainly in thoracic and lumbar regions of spinal cord
where do nerves innervating parasympathetic NS sit
mainly in cranium
some in sacral
choroid plexus
produces CSF in ventricles of the brain
made of modified ependymal cells
