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4a
Synapse (Functional anatomy (Physiological anatomy (The structure of…
4a
Synapse
Functional anatomy
Physiological anatomy
Synapse is the
junction where the axon of 1cell
(or any other portion)
terminates on the dendrites
(or any other portion)
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The structure of synapse varies considerably throughout thenervous system,
however, general features at most of the
synapses compraise following structures:
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1 .Synaptic knob
Contains
1.synaptic vesicles
- approx 50cm in diameter
- it’s gathered near the membrane
- vesicles contain excitatory or inhibitory
chemicals receptors
- the vesicles are transported down the axon
along microtubules in the axon
Types of vesicles
Contains
- A-ch
- glycine
- GABA/glutamic acid
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- Mitochondria
( containing plentiful of ATP)
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- is the nerve membrane
closest to the membrane of the
postsynaptic cell
- is the terminal bulbous knob like
ending of the presynaptic axon
- doesn’t have any neurofilaments
synapse is invariably used to describe
the seperation between the
axon terminals of 1 nerve fiber
n the dendritic process of an adjacent neuron