1 / 12

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.

vidal
Download Presentation

Nervesystemet

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  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 ↓

More Related