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Biologi Nervssysteme

Neuron En nervcell
Automatiska nervsystemet Det som vi inte styr över
Somatiska nervsystemet Det vi kan styra över
Parasympatiska nervsystemet Rest and digest
Sympatiska nervsystemet Fight or flight
Enteriska Matspjälkningen
Perifierade nervsystemet Nervtrådar
Stimuli När sinnesceller skickar signaler till hjärnan
Respons När hjärnan svarar på stimulin
Hormonsystemet Köttlar som frisätter hormoner i bodet
Sinnessystemet Lukt, känsel, smak, hörsel, syn
Interneuron Nervceller som kopplar ihop och modulerar andra nervceller
Depolarisering Cellpotensialen ökar
Hyperpolarisering Cellpotensialen minskar
Aktionspotensial Cellmembranspotensialen snabbt ökar
Refraktärsperiod Den tid innan en ny aktionspotensial kan ske
Impuls En signal skapad av stimuli
Dendriter Cellens spröt
Axon Kroppen på nervcellen
Axonterminal Slutet av nervcellens axon
Membranpotenisal Spänningen över cellen
Receptorstyrda jonkanaler Kanaler som behöver neurotransmitorer för att aktiveras
Mekaniskt styrda jonkanaler Kanaler som styrs av tryck och yttre faktorer
Späningstyrda kanaler Kanaler som styrs av spänningen runtom cellen
Myelin En "stödcell" som får aktionspotensialen gå snabbare
Synaps Överföringen av neurotransmitorer till nästa cell
Synapsspalt Mellanrummet mellan nerven och nästa cell
Hämmande synapser De synapser som triggar K+ kanaler att öppnas
Stimulerande synapser De synapser som triggar Na+ kanaler att öppnas
Neurotransmittorer Ämnen som aktiverar receptorstyrda jonkanaler
Vesiklar De "cellbubblor" som neurotransmitorer överförs i
Exocytos När större bubblor av ämnen transporteras ut ur cellen
 

 



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