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38 Cards in this Set

  • Front
  • Back
capsule
path that connects cerebrum and brainstem
virchow-robin space
space continuous with the subarachnoid space where cerebral vessels lie. dips down into brain with vessels
epidural space
real space, above the dura
subdural space
potential space b/t the dura and arachnoid
trace the path of CSF from start to finish
choroid plexus
lateral ventricles
foramen of monroe (IV foramen)
3rd ventricle
aqueduct of silvius (cerebral aqueduct)
4th ventricle
2 foramena of luschka and foramen of magendie
cisterna magna
subarachnoid space
arachnoid granulations
superior sagital sinus
where are the legs and feet in the precentral/postcentral homunculus located?
paracentral lobule
what is lateral to the diencephalon?
basal ganglia
where is the 3rd ventricle located?
b/t the 2 thalami
what does the pineal gland do?
it secretes melatonin, which helps you sleep and regulates circadian rhythms
components of the diencephalon
thalamus, hypothalamus
pituitary gland, pineal gland
components of midbrain
superior and inferior colliculi dorsally
cerebral peduncles ventrally
function of superior and inferior colliculi
superior colliculi - vision
inferior colliculi - hearing
components of metencephalon
pons and cerebellum
seeing the inferior olivary nucleus indicates you are in the ______
rostral medulla
elongated section of spinal cord
cervical
only cranial nerve to come off the dorsal side
CN IV (Trochlear)
cranial nerves arising from the pontomedullary junction
VI
VII
VIII
how does the white matter:grey matter ratio change in the spinal cord?
as you go more caudal the ratio decreases because more and more of the axons have already found their destination.
spinal cord section with smallest ventral horns?
thoracic
interomedial cell column
the lateral horn of grey matter located in the T1-L2 that contains preganglionic sympathetic cell bodies
funiculus
many fasciculi (bundles of axons) put together
fasciculus gracilis vs fasciculus cuneatus
components of the dorsal column (carry vibration and proprioception)

located in the dorsal funiculus

gracilis is medial, from legs
cuneatus is lateral, from arms

fasci
separates the dorsal and ventral spinal nerve rootlets?
denticulate ligament
location of the conus medullaris
L1-L2
location of lumbar puncture?
L3-L4
(w/in lumbar cistern!)
filum terminale
exension of pia mater from conus medullaris to sacrum, tethering the spinal cord in place
where do the processes of a DRG neuron begin and end?
begin in skin, end in dorsal horn
sulcus limitans
the groove located b/t the alar plate and the basilar plate embryologically.
alar plate and basilar plate
embryologically, these 2 plates come together to form the spinal cord. alar plate forms sensory neurons. basilar plate forms motor neurons.
laminae of rexed
grey matter of spinal cord is divided into layers called Laminae of Rexed
substantia gelatinosa
nucleus proprius
tract of lissauer
do we have to know this shit???
ventral white commissure
allows pain sensory information to cross over
Clarke's column
cerebellar relay nucleus
nucleus of onuf
controls sphincters
located in sacral region
corticospinal tract
begins in motor cortex

80% crosses over at medullary decussation and becomes the lateral funiculus. this innervates leg and arms muscles

the other 20% does not cross over becomes the ventral funiculus, innervating the axial musculature bilaterally
why doesn't a stroke affect the muscles of the trunk?
because the trunkal / axial musculature gets innervated by both sides of the brain
dorsal column
carries vibration and proprioception information

sensory fibers come in and do not synapse

fibers from leg form fasciculus gracilis

fibers from arm form fasciculus cuneatus
spinothalamic tract
carries Pain and Temperature information

synapse in dorsal horn and cross over to the other side via anterior white commissure

fibers run in the ventral lateral funiculus

leg fibers run lateral to the arm fibers