Communication Between Neurons At Synapses

Wednesday, May 12, 2010 Jo Hanniffy 0 Comments

A couple of weeks ago I have posted about communication within neurons in general, but not too spesific (check it out on the label of Physiological Psychology), which most of the articles posted noneconsecutively. However, today, we talk about the communication between neurons at synapses more spesifically. This communication at synapses is the continuation of  the detail of  action potential, spesifically is about how ions can process when they reach the presynaptic membrane and postsynaptic.

As you may already know a synapses is a gap between terminal button and dendrites (see the picture above). And  you may already know that synapses consist two types of synapse: Presynaptic and Postsynaptic. The presynaptic is belong to the terminal, and postsynaptic receives information from the terminal button. However, there are other types of synapse you should know: Presynaptic membrane, Postsynaptic membrane, and Synaptic Cleft.

Membrane is a layer that encloses neurons. Membrane also contains loads of important protein in the process of  the communication between neurons.

When the action potential reaches the terminal button it brings a synaptic vesicle that contains neurotransmitter  (see the picture above). The synaptic vesicle before reaches the presynaptic membrane is  apparently docked -- the neurotransmitter, binding together in a circle. As soon as they bind together with presynaptic membrane the synaptic vesicle breaks the dock and open; fuse their contains (neurotransmitter) into the synaptic cleft, and bind together with postsynaptic membrane.

The binding of neurotransmitter with postsynaptic apparently resulting inhibitory and excitatory affects; these affects called postsynaptic potential. 

DBLN, 22.49-110510


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