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biologie bac > Maduva spinarii > Flashcards

Maduva spinarii Flashcards

1
Q

Unde este dispusa substanta cenusie?

A

la interior

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2
Q

Ce forma are substanta cenusie?

A

litera H

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3
Q

Cate perechi de coarne prezinta substanta cenusie?

A

3 perechi

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4
Q

Cum se numesc cele 3 perechi de coarne pe care le prezinta substanta cenusie?

A

posterioara-dorsala
anterioara-dorsala
laterale

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5
Q

Ce contin coarnele posterioare/dorsale?

A

neuroni somatosenzitivi si intercalari (de asociatie)

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6
Q

Ce semnificatie au neuronii somatosenzitivi?

A

de deutoneuroni (al II-lea) ai cailor senzitive

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7
Q

Cu ce fac sinapsa neuronii somatosenzitivi?

A

protoneuronii (primul neuron)

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8
Q

Unde este localizat protoneuronul?

A

in ganglionul spinal

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9
Q

Ce contin coarnele anterioare/ventrale?

A

neuroni somatomotori

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10
Q

Ce fac neuronii somatomori?

A

coordoneaza activitatea musculaturii striate

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11
Q

Ce formeaza axonii neuronilor somatomotori?

A

radacinile anterioare ale nervilor spinali

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12
Q

Ce contin coarnele laterale?

A

neuroni viscerosenzitivi si visceromotori somatici

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13
Q

Unde se afla substanta reticulata?

A

intre coarnele posterioare si laterale si in jurul canalului ependimar

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14
Q

Unde este mai bine individualizata substanta reticulata?

A

in regiunea cervicala

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15
Q

Ce formeaza substanta reticulata?

A

neuroni asezati in retea

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16
Q

Unde este dispusa substanta alba?

A

la exterior

17
Q

Din ce este alcatuita substanta alba?

A

din fibre nervoase

17
Q

Care sunt fibrele nervoase din care este alcatuita substanta alba?

A

mielinice, amielinice si nevroglii

17
Q

Cum se numesc cele 3 perechi de cordoane pe care le prezinta substanta alba?

A

anterioare, posterioare si laterale

18
Q

Ce sunt cordoanele?

A

cai de conducere/ tracturi a impulsurilor intre diferite etaje ale SNC

18
Q

Cum pot fi caile de conducere?

A

scurte, lungi, descendente si de asociatie

19
Q

Ce fac caile de conducere scurte?

A

leaga segmente medulare

19
Q

Cum sunt caile de conducere lungi?

A

ascendente, situate periferic

20
Q

Ce fac caile de conducere lungi?

A

conduc informatii de la receptori

21
Q

Ce fac caile de conducere descendente?

A

conduc informatii spre efectori

21
Q

Unde sunt situate caile de conducere descendente?

A

spre interior

22
Q

Unde sunt situate caile de conducere de asociatie?

A

profund, in vecinatatea substantei cenusii

biologie bac (14 decks)

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