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15 Cards in this Set

  • Front
  • Back
What is....
1. Neuroanatomy
2. Neurophysiology
3. Neurochemistry
1. structure

2. signals

3. compound, molecular biology
Golgi Methods
a)preserve tissues with heavy metals; b) section; c) stain
advantage: detail
disadvantage: takes time; preserves <5%
Methylene Blue
advantage: stains large amount of tissues
disadvantage: not detailed; can't see cellular structure
uses fluorescent markers
recognize specific part of cell
Field potential recordings
-similar to EKG, EMG, ERG
advantage: easy; no surgery
disadvantage: desynchronized signals and distance causes loss of some signals
bundle recording
-follows all-or-none principle
extracellular=only transit response
intracellular=both transit and sustained
disadvantage: only large cells
patch clamp recordings
a)pipette b)negative pressure c)cell membrane
advantage: records electric signals and movement
disadvantage: expensive equip.
-receive/integrate/transmit signals
-undergo apoptosis
-don't divide again upon differentiation
-"nerve glue"
-supportive network
-outnumber neurons
-clean mess
Golgi I
large cell body

long axons/long dendrites
Golgi II
small cell body

local function

short or no dendrites/axons
cell body
contains common organelles

Nissl substance: involved in axon transport

Schwann cells
-individual oligodendrocytes
-vary in amount in axon
-protects axon and action potential
-nourish axon
What is a...

1. Chemical synapse

2. Electric synapse
1. amplifies signal; signal delay
2. (gap junction)=bidirectional exchange; no delay
-hemichannels not connected