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NSC Exam 1 questions with right actual answers.
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NSC Exam 1 questions with right actual answers.
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NSC Exam 1 questions with right actualanswers.
4 neuron functional zones ANS - input zone - dendrites
integration zone - axon hillock
conduction zone - axon
output zone - axon terminals
What kind of neurons make up most of the CNS? ANS - interneurons
astrocytoma ANS - tumor in brain or spinal cord - cancerous - astrocytes rapidly multiplying
Alexander disease ANS - genetic mutation causes astrocytes unable to get rid of GFAP (something they
produce) --> they fill up and die
Multiple sclerosis ANS - oligodendrocyte injury from autoimmune attack
Sympathetic nervous system ANS - fight or flight
parasympathetic nervous system ANS - rest and digest
white matter ANS - axon bundles - no neurons/cell bodies
gray matter ANS - clusters of neuron cell bodies
corpus callosum ANS - white matter
,basal ganglia ANS - Center of the brain - a bunch of neurons for movement
Parkinson's disease ANS - basal ganglia dies
limbic system ANS - emotional memory, regulation
cortex area ANS - consciousness, decision-making
Midbrain function ANS - Reticular formation - sleep, arousal, body temperature
If you go into a coma, what has failed? ANS - The midbrain
pons function ANS - connection of nerves to the eyes and face.
medulla function ANS - heart rate, breathing
cerebellum function ANS - motor coordination, learning
what part of your brain can you live without? ANS - cerebellum
meningococcal meningitis ANS - bacteria enters subarachnoid fluid
tumor of the dura name ANS - meningioma tumor
subdural hematoma ANS - blood under dura mater
what do cerebral ventricles do? ANS - make CSF
, how much CSF is produced per day? ANS - 16oz
hydrocephalus ANS - CSF circulation failure - entire 16oz doesn't leave brain each day
how is hydrocephalus treated? ANS - CSF drainage tube
CT scan ANS - X-ray
Shows tissue density
MRI ANS - magnetic fields and radio waves cause protons in brain tissue to line up
PET scan ANS - Show brain activity
Radioactive chemicals to map destination
best neural imaging for brain tumors ANS - PET scan
Functional MRI ANS - Show brain activity
Detects changes in metabolic activity (ex. oxygen use)
Show how networks in brain collaborate
Diffusion tensor imaging ANS - shows brain connections (images axons of neurons)
soma ANS - cell body
intrinsic proteins ANS - proteins on surface of cell membrane (receptors, channels, etc)
Kinesin transport type/direction ANS - anterograde transport (soma --> terminals)
Dynesin transport type/direction ANS - retrograde transport (terminals --> soma)
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