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Patho Test 2 Flashcards
patho
75
Other
Graduate
10/05/2008

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Term
Precentral Gyrus
Definition
Motor Cortex
Term
Postcentral Gyrus
Definition
Sensory cortex
Term
dorsal columns
Definition
proprioception (position sense) and vibration sense
Term
spinalthalamic tract
Definition
pain and temperature sensation tract
Term
oligodendroglia
Definition
myelin making cells in CNS
Term
astrocytes
Definition
more numerous than neurons, nourish neurons, help form the BBB, star shaped
Term
astrocytoma
Definition
highly malignant tumor of brain with poor prognosis
Term
basal ganglia
Definition
deep brain structure that maintains smooth muscular movements and posture
Term
parkinson's disease
Definition
a disease of basal ganglia producing rigidity and irregular movements; think 1% of the population, environmental poison (carbon monoxide), hypokinetic movement disorder; think Lewy bodies; think synuclein (insolute neuronal protein)
Term
prefrontal cortex
Definition
personality
Term
white matter
Definition
myelin
Term
gray matter
Definition
collection of neuron bodies
Term
temporal lobes
Definition
memory formation
Term
thalamus
Definition
relay station of sensory input
Term
occipital lobes
Definition
vision
Term
reticular activating system
Definition
wakeful state
Term
blood brain barrier
Definition
tight junctions of endothelial cells and astrocytic foot processes. it is an obstacle to CNS drug delivery of polar and large molecules
Term
CSF
Definition
made by ependymal cells in the choroid plexus
Term
Cauda equine
Definition
the horse tail shape arrangement of nerves as they leave the spinal cord at its termination at L2 (lumbar vertebral body #2)
Term
myelin
Definition
complex lipids and cholesterol. white matter.
Term
hydrocephalus
Definition
too much CSF; think dilated brain ventricles and big heads in babies
Term
alcohol
Definition
associated with serious accidents involving CNS; more than 50%
Term
dorsal roots of spinal cord
Definition
sensory afferents
Term
ventral roots of spinal cord
Definition
motor efferents
Term
hypertension
Definition
major risk factor for stroke and atherosclerosis
Term
spinal canal
Definition
space in vertebral column where the spinal cord sits
Term
spinal disc disease
Definition
degeneration of cartilaginous discs between vertebral bodies which may compress nerves of spinal cord
Term
cervical cord injury
Definition
think serious, possible respiratory paralysis (like Christopher Reeves) and possible quadriplegia (paralysis of arms and legs)
Term
Most diseases of the brain and spinal cord produce:
Definition
Permanent damage
Term
MS
Definition
the most common disease which destroys myelin (demyelinating disease). think white, young adult female (20-40), probably autoimmune, breach of BBB, typically relapsing-remitting and ultimately progressive; treatment: disease modifying agents; think sensory, motor and optic neuritis; MS plaques (demyelination) near ventricles
Term
Cortex of the brain
Definition
gray matter
Term
cortex of spinal cord
Definition
white matter
Term
shifting of brain structures
Definition
think "brain herniaton", think serious, possibly fatal
Term
brain edema
Definition
think serious, alteration of blood brain barrier, think medication treatment
Term
spinal cord injury
Definition
think primary mechanical and secondary biochemical injury (apoptosis and oxidative stress); think medication treatment
Term
circle of willis
Definition
think base of brain; think internal carotid and vertebral arteries as inputs; common site for atherosclerosis due to many branch points
Term
brain stem
Definition
think cardio-respiratory centers in pons and medulla
Term
middle cerebral artery
Definition
think direct shot for embolus from heart aorta
Term
middle cerebral artery stroke
Definition
possibly sensory and motor deficits on side opposite actual brain damage
Term
hypothalamus
Definition
think temperature regulation, hormone input to pituitary, appetite regulation
Term
brain ventricles
Definition
think CSF production
Term
foramen magnum
Definition
largest hole in base of skull
Term
"pathy"
Definition
disease
Term
coup
Definition
area of direct brain injury from blow
Term
complications of anticoagulant therapy
Definition
think blood collection (hematoma) within cerebrum, blood within cerebellum, blood associated with meninges (subdural hematoma)
Term
cranial nerves
Definition
think 12 in number
Term
alzheimer's disease
Definition
think 85% of dementia, baby boomer epidemic in 15-25 years, elderly, tauopathy, senile plaques in medial basal temporal lobes (hippocampus), amyloid in plaques, average duration: 7 years to death; terminal; akinetic (unable to move) and mute; no drug works well; live long enough and you will probably get it
Term
MMSE (mini mental status exam)
Definition
simple test to test for memory impairment
Term
dementia
Definition
cognitive impairment sufficient to make one unable to carry out "activities of daily living"
Term
multi-infarct dementia
Definition
think second most frequent cause of dementia, classically "step-wise progression", the culmination of many tiny strokes (lacunes) in deep portion of brain, more common than realized, hypertension is a major risk factor; poor prognosis; commonly seen with alzheimer's
Term
Wernicke's-Korsakoff Syndrome
Definition
think heavy, prolonged alcohol use causing dementia, damage to mamillary bodies and cerebellum, severe memory impairment, ataxia, and confabulation (talk forever). Treatment: thiamine (vitamin B1)
Term
Lewy Body Dementia
Definition
think dementia of Parkinson's disease, vivid visual hallucinations, made worse with dopamine blockade
Term
Pick's Disease
Definition
think rare cause of dementia, earlier than Alzheimer's, classic fronto-temporal cerebral atrophy; tau; no insight, less memory impairment compared to Alzheimer's; typical frontal lobe features like Gage.
Term
Tauopathy
Definition
Pick's and Alzheimer's
Term
dorsal
Definition
upper surface or back
Term
ventral
Definition
front or bottom side
Term
lateral
Definition
to the side or away from the middle
Term
anterior
Definition
front of the body
Term
posterior
Definition
back of the body
Term
caudal
Definition
at end (think of caudal fin of fish being at the end of the fish)
Term
rostral
Definition
at front
Term
rostral-caudal shift
Definition
very dangerous. brain is actually being moved. it is being squeezed out the hole at the bottom of the brain.
Term
CNS
Definition
central nervous system. brain and spinal cord.
Term
PNS
Definition
peripheral nervous system. peripheral nerves and autonomic nervous system (sympathetic and parasympathetic)
Term
sagittal
Definition
think of as arrow right down the middle of the brain
Term
parasagittal section
Definition
just one side of the brain
Term
coronal
Definition
transverse
Term
What is the brain composition?
Definition
water, fat, and protein (in that order)
Term
What's the difference between the composition of the brain and spinal cord?
Definition
Brain = white matter inside, gray outside
Spinal Cord = gray inside, white outside
Term
Astroglia
Definition
nourish neurons, help form BBB, star shaped
Term
Oligodendroglia
Definition
make CNS myelin. If you destroy a few of these, many more axons will be affected because it produces myelin for multiple axons.
Term
Microglia
Definition
CNS "phagocytes", "little guys", derived from bone marrow
Term
ependyma
Definition
make CSF and line the ventricles
Term
Glial Cells
Definition
support, sustain, and modulate. the brain is predominately composed of these 10:1.
Term
Glioma
Definition
tumor in the brain that's most common because theres 10 times as many cells to go bad
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