File:Imgnotraçat arc reflex cat.svg

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Description
Català: Esquema explicatiu de l'arc reflex; el trajecte que realitza l'energia i l'impuls nerviós d'un estímul per dues o més neurones. La medul·la espinal (3) rep els impulsos sensitius de l'organisme (2) - aquí el dit - i els envia al sistema nerviós central (vies aferents (4)), el qual envia impulsos motors a la medul·la (vies eferents (5)) que els envia, al seu torn, als òrgans -aquí el múscul del braç- a través dels nervis espinals(6). Un cop rebuda l'ordre, l'òrgan o el receptor d'aquesta instrucció, executa l'ordre (7) - aquí retirar el dit-.

Parts de l'esquema:

  1. Font de calor
  2. Dit (receptor)
  3. Medul·la espinal
  4. Axó neurona afarent (sensorial)
  5. Axó neurona afarent (motor)
  6. Múscul (efector)
  7. Impuls
Il·lustració vectorial realitzada amb l'assessorament d'Irene Pelegrí, biòloga.


 
This W3C-unspecified vector image was created with Adobe Illustrator.
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