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Flashcards in Spinal Anat - Irene Gold Deck (258)
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121

what is the way that the anterior pituitary communicates with the CNS?

the blood

122

what is the way that the posterior pituitary communicates with the CNS?

neural connection

123

function of astrocytes?

for repair and blood brain barrier

124

function of oligodendrocytes?

Form myelin sheaths around CNS

125

fx of schwann cells?

form myelin sheaths around PNS

126

fx of microglial cells?

engulf foreign and dead particles

127

fx of Ependymal cells?

line the ventricles

128

what are the sensory fibers for pain?

nociceptors- free nerve endings

129

what are the sensory fibers for temperature?

Krause= cold; Ruffini= Hot

130

what are the sensory fibers for touch?

merkels; meissners; Pacinian; Peritrichial nerve endings

131

what are the sensory fibers for proprioception?

Muslce spindles; GTOs

132

what is the leptomeninx

pia and arachnoid

133

what is the pachymeninx?

dura

134

main function of the posterior horn?

sensory

135

main function of the anterior horn?

motor

136

fibers for alpha motor neurons

extrafusal

137

fibers for gamma motor neurons

intrafusal

138

what are renshaw fibers and where are they located?

inhibitory cells that are close to motor cells

139

function of the lateral horn?

sympathetic division and only exsists from T1-L2

140

function of the medial lemniscal system?

proprioception

141

what is the pathway of the lemniscal system?

DRG of either the gracilis or cuneatus

142

function of the fasciculus gracilis?

vibration

143

function of the fasciculus cuneatus

2 point discrimination

144

function of the posterior spinocerebellar tract?

unconcious proprioception to the cerebellum from the lower limb

145

function of anterior spinocerebellar tract?

stretch from spindle cells of lower limb

146

function of spinaltectal?

tactile stimulation causing visual reflexes

147

def of tectile?

hearing and vision

148

fx of medial lemniscus?

proprioception, disc touch, vibration

149

fx of pyrmidal tracts

voluntary motor

150

fx of lateral corticospinal tracts

voluntary motor