Chemical synapse

Introduction

Chemicalsynapsesarepreservedandmainlyexistinthehumanbrainasaresultofnaturalselection.

Advantages

Theadvantagesofchemicalsynapsesareasfollows:

First,chemicalsynapsescanensuretheunidirectionalityofnerveconduction.

Ithinkso.Thehumanbrainhastoreceivealotofinformation,andsomeoftheinformationmayevenbecompletelyopposite.Therefore,ifitisanelectricalsynapse,thenitislikelythattherewillbeasituation,thatis:twoneuronstransmitinformationtoeachotheratthesametimeOnthecontrary,therewillbe"fights."

Chemicalsynapsesaredifferent.Duetotheroleofneurotransmitters,theycanensuretheunidirectionaltransmissionofinformationandbetterhelpthebrainwork.

Second,chemicalsynapsescanensurethatthepostsynapticmembraneselectivelyreceivesinformationfromtheanteriormembrane.

Theconductionmechanismofchemicalsynapsesissuchthatneurotransmittersarereleasedfromthepresynapticmembraneintothesynapticcleft,andthetransmittersenterthepostsynapticmembranethroughreceptorsonthepostsynapticmembranetotransmitinformation.Thisensuresthattheinformationenteringthepostsynapticmembraneisfiltered.

Liketheblood-brainbarrierofthebrain,itcanensurethatthesubstancesenteringthebrainarescreened.Thisisaprotectiveeffectonthehumanbody.

Third,chemicalsynapsesaremoreadaptedtotheactivitiesofthehighernervoussystem.

Becauseofthepresenceoftransmitters,chemicalsynapsesarepronetofatigue(becauseofthedepletionoftransmitters),anditisthisfatiguethatcanensurethenormaloperationofthehigh-levelnervecenter.

Iftheadvancedcenterhasbeenworkingallthetime,acceptingalltheinformationthatentersthehumanbody,thenitisalossforthebody!

Therearealsohabituation,sensitization,long-termenhancement,andlong-termweakeningintheplasticityofsynapses,whichareallduetotheroleofchemicalsynapsesandareretainedintheprocessofnaturalselection.的，；Itisofgreatsignificancetotheadvancedfunctionsofthebrainsuchaslearningandmemory.

Thisissomethingthatelectricalsynapsescannotdo.

Fourth,chemicalsynapsescanactlonger.

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