Neuro Block 4
N. cerelus produces what nt?
Midbrain raphe produces what nt?
What is Psilocin?
serotonin agonist in mushroom
Mescaline is what?
serotonin agonist in cactus
What is the mode of action of ecstasy?
massive release of endogenous serotonin
depletes serotonergic neurons----causes depression---needs prozac
What is adenosin?
Adenosin acts where?
at the membrane other than a synapse
What is the effect of adenosi?
What inhibits adenosin?
What are the excitatory a.a?
Is glycine inhibitory or excitatory?
Strychnine inhibits what?
What is strychnine?
Large molecule nt are what?
Nitric oxide and carbon monoxide are what kind of neurotransmitters?
Lish nodules are seen in what condition?
What is the SIN of MS?
What bacterium causes meningitis in newborn?
Group B cocci
What determines whether something is sour, sweet or salty?
population of fibers
What information goes to nucleus solitarius?
What goes to N. Ambiguens?
What is so special about CNS CN I?
What is the only excitatory cell of the cerebellum?
Receptor for olfactory cell is what?
dendite of a bipolar neuron
What is responsible for the olfactory reflex?
anterior perforated substance
What causes the uncus to bulge out?
Olfactory cortex is neo or allocortex?
What is the difference between neo and allocortex?
neo cortex--6 layers and thalamus
allocortex--3 layers and no thalamus
Another name for uncinate fit is?
Another name for Jacksonian Seizure is what?
What preceds a Jacksonian Seizure?
Where is the uncus/amygdala located?
base of Temporal Lobe
Which part is important for learning and memmory?
In what condition are CA1 neurons of the hippocampus destroyed?
What is the reward area of the brain called?
What is required for declarative memory?
What is required for procedural memory?
Amygdala has what two parts?
The septal are is for what?
The septal area is located where?
around the periaqueductal gray
Long term memory involves what synthesis?
Presynaptic Calcium is the basis for what kind of memory?
Post synaptic calcium is the basis for what type of memory?
Long term memory
Long term potentionation(memory) is seen in what neurons?
What are the 3 receptors for Glutamate?
In CA-1 neurons how is the NMDA receptor activated
Glu binds to kinate and AMP--> depolarizes the membrane--> Mg kicked off the NMDA receptor--> GLu binds to NMDA---> depolarization--> Ca enters
In a CA-1 neuron how is long term depolarization of the post synaptic membrane achieved?
retrograde transport of NO--> more glutamate released
How is glutamate eliminated?
Alzheimer's is characterized by the destruction of what nucleus?
N. Basalis----> no Ach
What are the the signs of Alzeimers?
Intracellular tangles of Microtubule protein Tau
Extracellular Tangles of Beta ameloid
What 2 conditions predispose to a Alzeimer's?
What are the 2 higher association cortex areas?
prefrontal and orbitofrontal
Thalami touching eachother
Why is lumbar cistern significant?
sampling of CSF
What anchors Conus Medullaris?
Psilocin, Mescaline are what?
What does Ecstasy do?
release of serotonin
What inhibits glycine?
Whats the effect of inhibiting strychnine?
Where does the brain pass?
CSF from subarachnoid moves into the dural sinus via what?
What is the only important subarachnoid cistern?
What anchors pia?
What is subfocal herniation?
forcing brain under the faux tentorium
Uncal herniation can cause what problems?
What is coning?
cerebellum into foramen magnum pushing against medulla
What forms the Glial Limiting Membrane?
At what point do CSF and brain communicate?
Epyndymal cells of the ventricles
Neuro Block 4
Neuro Block 4