Neuro pt 2 Flashcards
what does MI represent
primary motor cortex
where are the nasal retinas
more medial, toward the nose
alexia
impaired reading ability
where is the right visual field represented
left visual cortex and thalamus
what tracts are a part of the lateral pathways
corticospinal
rubrospinal
what area is M1 in
area 4
loss of sensory info
recognition/association
agnosia
what is a wedge vertebral fracture
compression fracture where anterior part of the vertebrae collapses
how is the motor cortex organized
topographically
what are the 4 major lobes
frontal
parietal
temporal
occipital
where is the visual cortex
the occipital lobe
what is the tectospinal tract responsible for
mediating reflexes to visual stimuli
where does the right visual field project to
the right nasal retina
left temporal retina
what is locked in syndrome
patients are aware and can think but are paralyzed and cannot communicate
name two things that happen when there is damage ot upper motor neurons
interference with voluntary movements
weakness/paralysis on the contralateral side of the body
where does the vestibulospinal tract start and end
medualla
spinal cord
where does the tectospinal tract originate
the midbrain
what is the grey matter of the brain
nerve cell bodies
what causes non fluent aphasia
damage to brocas area
receptive or seonsory aphasia
inability to read/understand the spoken word due to inability to process info in the brain
global aphasia
combination of expressive and receptive aphasia
when does a decerebrate response occur
when a person has a brain stem lesion
what is aphasia
inability to comprehend or express language
impaired reading ability
alexia
what is hemianopia
loss of vision on either one or both eyes, either partially or completly
what does the premotor cortex control and where would you find it
skilled movements in the frontal lobe
what is a dislocation vertebral fracture
vertebra forced out of its normal position
what would you see with damage to a particular fiber
partial loss
the optic fibers from what retina CROSS in the optic chiasm
the nasal retinas
what does the medulla control
resp and cardio function
cough reflex, swallowing, vomiting
damage to what side of the brain causes behavioural problems
right
a strong unexpected visual stimulus activates what part of the tectospinal tract
the superior colliculus
agnosia
loss of (word?) recognition/association