Nerve06/autonomic nervous system and synapses/characteristics of synapses

<synaptic delay>

Compared to conduction within a neuron, synaptic transmission is a time-consuming process. The time it takes for one synaptic transmission is said to be one millisecond.

<fatigue>

With repeated synaptic transmission, decrease in the transmitter and efficiency of transmission may take place. With such 'fatigue' an action potential arriving at the pre-synaptic membrane, may not be able to elicit action potential in the post-synaptic membrane.

<synaptic potentiation>

With repeated synaptic transmission, increase in the transmitter, post-synaptic membrane and efficiency of transmission may take place. With such 'potentiation' an action potential arriving at the pre-synaptic membrane, may elicit many action potentials in the post-synaptic membrane.

<one-way> At synapses, pre and post are determined. It is a one-way mechanism.

<sensitive to drug effects>

Challenge Quiz

1.

At synapses, transmission is one-way true false  正解!

2.

At synapses, because of chemical transmission, the speed, compared to conduction is fast slow  正解!.

3.

If, after the first action potential arriving at the pre-synaptic membrane, there was one action potential generated in the post-synaptic membrane, and after the second action potential arriving at the pre-synaptic membrane, there were two action potentials generated in the post-synaptic membrane, potentiation fatigue  正解! took place.

4.

If, after the first action potential arriving at the pre-synaptic membrane, there was one action potential generated in the post-synaptic membrane, and after the second action potential arriving at the pre-synaptic membrane, there were no action potential generated in the post-synaptic membrane, potentiation fatigue  正解! took place.

5.

Synapses have high low  正解! sensitivity to drugs.

6.

Pre-synaptic membrane is located at nerve ending neuronal cell body dendrites  正解!.