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!.