Spinal 2 Flashcards
what is the MC type of neuron in the CNS
mutlipolar
what resorbs excess CSF
arachnoid granulations
Where does the spinal cord terminate
L1-L2
Go with L1 if they give u options
The end of the spinal cord is called
conus medullaris
THe horses tail is aka
cauda equina
CSF exchanges between the 3rd and 4th ventricles via
aqueduct of sylvius
what is the MC cell in the cerebellum
PURKINJE
deiters nuclei is associated with
lateral vestibular
Posterior horn is
sensory
anterior horn is
motor
Lateral horn is
sympathetic
UMNL do what to things
increase reflexes, muscle tone, spasticity, hypertrophy, clonus, increased DTR
BILATERAL
LMNL do what
decrease all functions
NORMALLY UNILATERAL
corticospinal is the only descending tract that is
pyramidal
Very specific like threading a needle
Tectospinal tract synapses in
superior colliculus (midbrain) EYES
Rubrospional nucleus is
red nucleous
Rubrospinal facilitates
flexors
INHIBITs extensors
Vestibulospinal facilitates
Extensors
INHIBITS flexors
vestibulospinal nucleus is
lateral vestibular nucleus
what tract is specific for pain and temp
lateral spinothalamic
Syringomyelia is
fluid filled cysts leads to bilateral pain and temp loss
Lateral and anterior spinothalamic tracts synapse in what nuclues
substantia gelatinosa
What is responsible for tactile sensation
anterior spinothalamic aka tract of Lissauer
cuneatus is at what level
above T6
gracillus is below it
