Nervceller Flashcards

1
Q

Perifieranervsystemet

A

Hela nervsystemet: huvud, ryggrad och ut från ryggrad

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2
Q

Vilomembranpotential

A

Spänningen som skapas av skillnad på K+

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3
Q

Neuron

A

Nervcellen

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4
Q

Gliaceller

A

Har olika uppgifter, tex. isolera axon

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5
Q

Cellkropp

A

Huvudet av cellen

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5
Q

Axon

A

“Sticker ut” från cellkroppen

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6
Q

Myelinskivor

A

Gliaceller som isolerar axonet

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7
Q

Postsynaps

A

Början på cellkroppen

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8
Q

Presynaps

A

Slutet på axonet

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9
Q

Synaps

A

Mellan axonet och cellkroppen; mellanrum

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10
Q

Effektorgan

A

Neuron tar slut här och skickar in en signal

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11
Q

Vesikel

A

Innehåller en transmitorsubstans som gör signal möjlig

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12
Q

Acetylchdin (Ach)

A

Transmitorsubstans som öppnar Na+ portar

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13
Q

Aktionspotential

A

Om depolarisation är tillräckligt kraftig öppnas spänningsstyrda portar

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14
Q

Depolarisering

A

Portar öppnas av Ach och släpper in Na+

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15
Q

Polaritet

A

Skillnad i spänning

16
Q

Ach-estras

A

Bryter ner Ach

17
Q

Hyperpolarisering

A

När GABA och Ach reagerar samtidigt och en vinner

18
Q

GABA

A

Transmittorsubstans som aktiverar Cl- intag

19
Q
A