Flashcards in Spinal Anat - Irene Gold Deck (258)
what is the way that the anterior pituitary communicates with the CNS?
what is the way that the posterior pituitary communicates with the CNS?
function of astrocytes?
for repair and blood brain barrier
function of oligodendrocytes?
Form myelin sheaths around CNS
fx of schwann cells?
form myelin sheaths around PNS
fx of microglial cells?
engulf foreign and dead particles
fx of Ependymal cells?
line the ventricles
what are the sensory fibers for pain?
nociceptors- free nerve endings
what are the sensory fibers for temperature?
Krause= cold; Ruffini= Hot
what are the sensory fibers for touch?
merkels; meissners; Pacinian; Peritrichial nerve endings
what are the sensory fibers for proprioception?
Muslce spindles; GTOs
what is the leptomeninx
pia and arachnoid
what is the pachymeninx?
main function of the posterior horn?
main function of the anterior horn?
fibers for alpha motor neurons
fibers for gamma motor neurons
what are renshaw fibers and where are they located?
inhibitory cells that are close to motor cells
function of the lateral horn?
sympathetic division and only exsists from T1-L2
function of the medial lemniscal system?
what is the pathway of the lemniscal system?
DRG of either the gracilis or cuneatus
function of the fasciculus gracilis?
function of the fasciculus cuneatus
2 point discrimination
function of the posterior spinocerebellar tract?
unconcious proprioception to the cerebellum from the lower limb
function of anterior spinocerebellar tract?
stretch from spindle cells of lower limb
function of spinaltectal?
tactile stimulation causing visual reflexes
def of tectile?
hearing and vision
fx of medial lemniscus?
proprioception, disc touch, vibration
fx of pyrmidal tracts