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SYNAPSE -
The point where 2 neurons combine is synapse.
It is of 2 types -
(i) Axosomic (between axon & cyton)
(ii) Axodendric (between axon & dendron)
Axon is termed as pre synaptic terminal while dendron is termed as post synaptic terminal.
Synapse name is given by Sir Charles Sherington.
Synapse is of 2 types -
1. Chemical 2. Electrical
S.NO.
CHEMICAL
ELECTRICAL
1.
Most common
Uncommon
2.
No direct contact between two terminal
Direct contact
3.
Synaptic cleft 10-20 nm gap
Cleft absent gap may be of .02 nm
4.
Terminal buttons present (diameter of 50 nm)
Terminal buttons absent
at the end of telodandria
5.
Transmission of impulse mediated by chemical
Transmission of impulse in electrical manner
called neurotransmitters
without neurotransmitters
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