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Nervesystemet

Nervesystemet . Nervesystemet. Centralnervesystemet (CNS). Det perifere nervesystem(PNS). Nerveceller . Neuroner . Gliaceller/ støtteceller for neuroner- danner myelinskeden. Axonet og de Ranvierske indsnøringer. Kalium/natriumpumpen. Na + og K + Ioners vandringer. Hjernen.

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Nervesystemet

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  1. Nervesystemet

  2. Nervesystemet Centralnervesystemet (CNS) Det perifere nervesystem(PNS)

  3. Nerveceller Neuroner Gliaceller/ støtteceller for neuroner- danner myelinskeden

  4. Axonet og de Ranvierske indsnøringer

  5. Kalium/natriumpumpen

  6. Na+ og K+ Ioners vandringer

  7. Hjernen Hjernebjælken (forbinder de 2 halvdele) Mellemhjernen Thalamus (sanseinformationersult/tørst/temp) Det limbiske system Storhjernen Midthjernen(søvn/vågenhed) Hjernebroen(pons) Den forlængede marv (Respirationcenter, blodtryk, )) Hjernestammen Lillehjernen(Koordinering) Hypothalamus(overordnet kontrol, sult, tørst,sex,aggression) Hypofyse

  8. CNS og PNS • CNS • Sensorisk • Motorisk • Det autonome

  9. Det autonome nervesystem • Parasympaticus • Sympaticus

  10. Refleks • Sensorisk nerve ind ad baghornet • Interneuron i rygmarven • Ach og GABA • Motorisk nerve ud ad forhornet

  11. Fremmende synapse • Vesikel med achetylcholin • Genoptag • Achetylcholinreceptor • Achetylcholin • Natriumioner • Calciumioner ind • Impulsretning ↓

  12. Hæmmende synapse • GABA • GABA genoptag • GABA receptor • Chlorid • Calciumioner • Impulsretning ↓

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