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38 Cards in this Set
- Front
- Back
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capsule
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path that connects cerebrum and brainstem
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virchow-robin space
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space continuous with the subarachnoid space where cerebral vessels lie. dips down into brain with vessels
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epidural space
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real space, above the dura
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subdural space
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potential space b/t the dura and arachnoid
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trace the path of CSF from start to finish
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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 |
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where are the legs and feet in the precentral/postcentral homunculus located?
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paracentral lobule
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what is lateral to the diencephalon?
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basal ganglia
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where is the 3rd ventricle located?
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b/t the 2 thalami
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what does the pineal gland do?
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it secretes melatonin, which helps you sleep and regulates circadian rhythms
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components of the diencephalon
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thalamus, hypothalamus
pituitary gland, pineal gland |
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components of midbrain
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superior and inferior colliculi dorsally
cerebral peduncles ventrally |
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function of superior and inferior colliculi
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superior colliculi - vision
inferior colliculi - hearing |
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components of metencephalon
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pons and cerebellum
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seeing the inferior olivary nucleus indicates you are in the ______
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rostral medulla
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elongated section of spinal cord
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cervical
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only cranial nerve to come off the dorsal side
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CN IV (Trochlear)
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cranial nerves arising from the pontomedullary junction
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VI
VII VIII |
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how does the white matter:grey matter ratio change in the spinal cord?
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as you go more caudal the ratio decreases because more and more of the axons have already found their destination.
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spinal cord section with smallest ventral horns?
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thoracic
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interomedial cell column
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the lateral horn of grey matter located in the T1-L2 that contains preganglionic sympathetic cell bodies
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funiculus
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many fasciculi (bundles of axons) put together
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fasciculus gracilis vs fasciculus cuneatus
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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 |
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separates the dorsal and ventral spinal nerve rootlets?
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denticulate ligament
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location of the conus medullaris
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L1-L2
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location of lumbar puncture?
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L3-L4
(w/in lumbar cistern!) |
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filum terminale
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exension of pia mater from conus medullaris to sacrum, tethering the spinal cord in place
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where do the processes of a DRG neuron begin and end?
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begin in skin, end in dorsal horn
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sulcus limitans
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the groove located b/t the alar plate and the basilar plate embryologically.
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alar plate and basilar plate
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embryologically, these 2 plates come together to form the spinal cord. alar plate forms sensory neurons. basilar plate forms motor neurons.
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laminae of rexed
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grey matter of spinal cord is divided into layers called Laminae of Rexed
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substantia gelatinosa
nucleus proprius tract of lissauer |
do we have to know this shit???
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ventral white commissure
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allows pain sensory information to cross over
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Clarke's column
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cerebellar relay nucleus
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nucleus of onuf
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controls sphincters
located in sacral region |
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corticospinal tract
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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 |
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why doesn't a stroke affect the muscles of the trunk?
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because the trunkal / axial musculature gets innervated by both sides of the brain
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dorsal column
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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 |
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spinothalamic tract
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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 |
