SN generalitati Flashcards

1
Q

clasificare neuroni in functie de tipul de axon

A

golgi I = principali = de protectie: axon lung, in encefal si MS
golgi II = intrinseci: axon scurt, rol inh, scoarta cerebrala si cerebeloasa

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2
Q

fibre mielinice si amielinice

A

m: din subst alba, majoritatea celor periferice
a: din subst cenusie, cele mai mici de 2 microni, veg postggl

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3
Q

caracteristici fibre A

A

miel, v 60-120 m/s

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4
Q

clasificare fibre A

A
Aalfa 
-motorii: moton alfa
-senz: I a - rec primari ai fusurilor neuromusc // I b in corpusculiineurotendinosi golgi
Abeta
- II - rec sec ai fusurilor neuromusculare & tut exterocept
Agamma
-sm: inerv fb ms intrafusale
Adelta
- III: tnl
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5
Q

caracteristici fibre B + cine sunt

A

slab miel, v 3-5 m/s

fb veg preggl & fb senz cu d 1-3 microni

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6
Q

caracteristici fibre C + cine sunt

A

amiel, v 0,6-2 m/s

fb veg postggl & fb senz IV

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7
Q

cel gliale din SNC + loc si/sau rol

A

astrocite: in capilare -> bar hematoencefalica, prolif rid -> tumori = astrocitoame
microglii: rol fagocitar
oligodendrocit: loc interfascic, rol mielinic
cel ependimare: = cel epit ce tapet cav ventric & can epend, rol in secr LCR

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8
Q

cel gliale din SNP

A

cel schwann: inconj axonii, sint mielina

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9
Q

ce proteina mentine sinapsele chimice?

A

molecule sinaptice de adeziune = prot din clasa caderinelor

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10
Q

nt amine biogene (ex + cu ce se ocupa)

A

serotonina: anx, stare de spirit, somn, apetit, sexualitate
norepinefrina: somn, starea de alerta, stres
epinefrina: stres
dopamina: motivare, recompensa, ajutor
histamina: r alergice, atentie, invatare
acetilcolina: act musc, invatare, memorie

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11
Q

nt neuropeptide (ex)

A

oxitocina
endorfine
vasopresina
colecistokinina

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12
Q

nt aa (ex)

A

GABA

glutamat

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13
Q

nt purine (ex)

A

adenozina, ATP

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14
Q

nt gaze & lipide (ex)

A

oxid nitric, canabinoizi

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