Somatosensation Flashcards
pain perception is via the blank pathway
anterolateral (spinothalamic)
somatosensory information is carried into spinal cord via the blank ganglion cells
dorsal root
best tactile resolution cells
merkel cell
lowest resolution receptors
pacinian corpuscle
fibers relaying proprioception
alpha
fibers relaying info from cutaneous mechanoreceptors
beta
fibers relaying nerve endings (pain fast)
delta,
fibers from nerve ending that is noxious pain
c
mechanoreceptors project to functionally segregated portions of blank
dorsal horn lamina
nociception involves activation of receptors that include the blank class of receptors
TRP
inflammatory pain inovlves release of a number of factors that can activate blank
free nerve endings
major nt of pain
glutamate, substance p
in gate control theory painful stimulus causes a strong activation of blank neurons
projection
pleasurable stimulus activates beta fibers via cutaneous mechanoreceptor, leads to modulation of blank
pain sensation
normal sensory input that results in pain is from blank in the synapse
glutamate/neuropeptides