Estimulua
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Transcript of Estimulua
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Estimulua
Zentzumenak
N-S Periferikoko nerbioak
N-S ZENTRALA
Muskulua Guruina
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SENTIMEN-ORGANOAK:*FISIKOAK
-Argia
Ikusmena
-Presioa
Oreka
Entzumena
Ukimena
-Tenperatura
Ukimena
*KIMIKOAK
-Disoluzioa
Dastamena
Usaimena
KANPO eta BARNE-ERREZEPTOREAK
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OZELOAK: Knidarioak, moluskuak eta anelidoak
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BEGI KONPOSATUA. MOSAIKO-IKUSMENA
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SOINUA
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Ornogabeen ESTATOZISTOA
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ALBO-LERROA
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SARE MODUKO N-S
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ESKAILERA MODUKO N-S edo GONGOILEZKOA
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HIPONEURIOA
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HODI MODUKO N-S
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EPINEURIOA
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SENTIMEN-, ASOZIAZIO- eta NEURONA MOTOREAK
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SAREA
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NaNa++-K-K++ aren ponpa aren ponpa
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ATSEDEN-POTENTZIALA eta AKZIO-POTENTZIALA
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Neuronaren atseden potentzialaNeuronaren atseden potentziala
Ioien banaketa neuronarn mintzaren bi aldeetan:
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BIRPOLARIZAZIOA
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Nerbio bulkadaren
hedapena axoi motaren arabera:
jarraian
saltoka
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Nerbio bulkada saltoka:
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Nerbio bulkada: jarraia
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Nerbio bulkadaren norabidea:
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Neuronen zirkuitoak
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SINAPSIA
Dopamina, azetilkolina, GABA, serotonina...
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GIZA NERBIO SISTEMAREN ANTOLAKUNTZAGIZA NERBIO SISTEMAREN ANTOLAKUNTZA
Nerbio Sistema
Nerbio sistema zentrala
Entzefaloa
Garuna
Zerebeloa
Enbor Entzefalikoa
Nerbio Sistema Periferikoa
Somatikoa
Espinalak(31)
Kranialak(12) AutonomoaSinpatikoa
Parasinpatikoa
Bizker hezurreko muina
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N-S ZENTRALA
ENTZEFALOA
BIZKARREZUR MUINA
Zerebroa
Zerebeloa
Enbor entzefalikoa
. . .
GAI GRISA
GAI ZURIA
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Nerbio sistema zentrala
Nerbio sistema periferikoa
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N-S ZENTRALA
ENTZEFALOA
BIZKARREZUR MUINA
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Nerbio sistemaren babesa:
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Lehen entzefaloa
1. PROSENTZEFALO EDO AURREKO GARUNA
2. MESENTZEFALOA EDO TARTEKO GARUNA
3. ERRONBENTZEFALOA EDO ATZEKO GARUNA
Gaurko entzefaloa
1. Telentzefaloa: garuna.Dientzefaloa: talamoa, hipotalamoa, hipofisia eta beste zenbait egitura
2. Mesentzefaloa
3. Metentzefaloa edo zerebeloa
Mielentzefaloa edo erraboila
ENTZEFALOAREN EBOLUZIOA:
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ENTZEFALOA:
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homunkulua
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Entzefaloa zeharka:
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Muina zenbait tokitan:
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Nerbio Sistema Nerbio Sistema periferikoaperiferikoa
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NERBIO KRANIALAK
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Zaldi buztana:
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Nerbioa:
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Muinatik ateratzen /sartzen diren nerbioak:
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Nerbio sistema Nerbio sistema periferikoa periferikoa
(erantzun motaren (erantzun motaren arabera)arabera)
SomatikoaSomatikoa
Autonomoa
Sinpatikoa
Parasinpatikoa
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Nahitazko ekintzak 1. Axones motores
2. Motoneuronas (extensor) y (flexor)
3. Médula espinal 4. Substancia gris de la
médula espinal 5. Substancia blanca 6. Raíz anterior del nervio
raquídeo (lleva axones motores)
7. Raíz posterior del nervio raquídeo
8. Ganglio sensitivo de la raíz posrior del nervio raquídeo
9. Neurona ubicada en el ganglio sensitivo
10. Vía sensorial ascendente que hace un relevo de la información y cruza al lado opuesto
11. Vía motora descendente que va desde la corteza cerebral a la médula espinal. También cruza al lado opuesto
12. Ejemplo de circuito neuronal en loop. La vía se inicia en la corteza cerebral, va la los ganglios basales. Desde aquí al tálamo y desde este vuelve a la corteza.
13. Tálamo 14. Ganglios basales 15. Huso muscular. Es un
receptor de elongación que se ubica en el músculo esquelético
16. Fibra sensorial. Es una vía que lleva información (potenciales de acción) desde el huso muscular a la médula espinal
17. Interneuronas
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1.Axoi mielinaduna 2.Neunoren botoiak 3.Zuntz muskularrak
4.Zuntz muskularren nukleoak 5.Mielinazko zorroa
Plaka motorea:
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NERBIO ESPINALAK edo BIZKARREZUR NERBIOAK