Envejecimiento del SNC Flashcards

1
Q

4 tipos

A

degeneración neurofibrilar
placas seniles
pérdida neuronal y sináptica
anomalías vasculares

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2
Q

Degeneraciones neurofibrilares

A

acumulación de filamentos de proteína TAU

altera corteza temporal int y sist límbico

depósito constante a partir de los 80 años

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3
Q

Placas seniles

A

proveniente precursor de la proteína amiloide

falla en desecho

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4
Q

Fisiología

A

disminución neuronas corticales
dism sust blanca
dism flujo sanguíneo
aumento consumo O2

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5
Q

Efectos de la edad - SNC

A

dism acetilcolina y dopamina

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6
Q

Efectos de la edad - SNP

A

declive inervación - desmielinización segentaria

dism funciones cognitivas

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7
Q

Efectos de la edad - SNA

A

concentración de catecolaminas

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8
Q

Patologías que aumentan con la edad

A

alzheimer o parkinson

tienen pérdida neuronal importante

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