Dorsal Colum: Medial Lemniscus Pathway Flashcards
DC-ML pathway goes to ______-awareness
conscious
ascending sensory pathways to the cerebellum go to ________ awareness
subconsious
what does the DC-ML pathway relay>
discriminative touch sensation
sterorgnosis
flutter-vibratory sense
proprioception
light crude touch sensation
the FC is only present from ____ spinal cord levels
C1- T6
- C1 does not contribute because it does not have sensory fibers
unilateral lesion of the dorsal column—> ipsilateral deficits :
tactile sense
two point discrimintation
astereogenesis
vibratory sense
position sense “stamp and stick ataxia”
conscious proprioception “rhombergs sign”
describe tabes dorsalis (neurosyphilis)
sensory ataxia due to impariment of dorsal roots relaying sensory input from lower limbs
blood supply to medial surface of the parietal lobe LL area
anterior cerebral a.
blood supply postcentral gyrus of teh parietal lobe trunk, UL area
middle cerebral a.
blood supply posterior limb of the internal capsule
lenticulostriate a. of the middle cerebral a.
blood supply to the thalamus
thalamogeniculate a. off the posterior cerebral a.
blood supply to the midbrain
posterior cerebral a.
blood supply to the pons
branches off the basilar a.
blood supply to the rostral medulla
vertebral a/ anterior spinal a.
blood supply to the caudal medulla
anterior spinal a. (ML)
NG and NC – Posterior spinal a.
blood supply to cervical spinal cord dorsal column
posterior spinal a.
