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Synapse Lecture
n/a
14
Science
Graduate
04/03/2009

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Term
What is the site of functional contact between neurons, where one neuron is excited or inhibited by another area?
Definition

 

 

synapse

Term
Who coined the term Synapse?
Definition
Sherrington
Term
Where is the point of communication between neuron and neuron; neuron and muscle?
Definition
synapse
Term
What is an electrical synapse used for?
Definition
rapid, non-changing depolarization in the brain
Term

What occurs at a chemical synapse?

Definition
vesicles that contain NTs in the presynaptic axon terminal are released into the synaptic cleft between neurons then, exocytosis occurs to the postsynaptic receptor.
Term
What is another name for electronic transmission?
Definition
electrical synaptic transmission
Term
What is electrical synaptic transmission? Where is it found?
Definition
direct, passive flow of current from one neuron to another; found in all types of nervous systems (although relatively uncommon)
Term

What did Furshpan and Potter discover in 1959 at the giant motor synapse?

Definition
crayfish abdomical nerve cord
Term
What does the the crayfish abdomical nerve cord mediate?
Definition
It mediates the escape tail flip of the crayfish allowing it to escape from predators.
Term
What leads to direct depolarization/an AP in the crayfish abdominal nerve cord?
Definition
AP in the pre-synaptic cell leads to direct depolarization in post-synaptic cell that also leads to an AP.
Term
Where is there no discernible synaptic delay?
Definition
the crayfish abdominal nerve cord.
Term
What does chemical transmission involve in the crayfish abdominal nerve cord?
Definition
Chemical transmission involves several biochemical steps that take a finite amount of time, if small.
Term
What type of synapse is almost symmetrical and has no considerable synaptic delay?
Definition
electrical synapse
Term
What type of synapse is asymmetrical and has a 1/2 second delay?
Definition
chemical synapse
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