Capítulo 7 Flashcards

Sistema nervioso - neuronas y sinapsis (24 cards)

1
Q

Sinapsis

A

Unión funcional entre una célula y otra

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2
Q

Vagusstoff - ACETILCOLINA

A

Inhibe la frecuencia cardiaca

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3
Q

Acetilcolina

A

Otto Loewi - 1921

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4
Q

Sinapsis eléctricas

A

Músculo cardiaco y cerebro

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5
Q

Noradrenalina

A

Hormona y neurotransmisor

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6
Q

Oxido nítrico

A
  • Primer gas neurotransmisor
  • Destruye bacterias
  • Vasodilatación
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7
Q

SNC

A

Cerebro y médula espinal

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8
Q

SNP

A

Pares craneales del cerebro y nervios espinales de la médula espinal

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9
Q

Dendritas

A

Transmite impulsos

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10
Q

Axón

A

Conduce impulsos

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11
Q

Nervios

A

Haces de axones, pueden ser mixtos o especializados

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12
Q

SNP

A
  • Células de Schwann
  • Células satélite
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13
Q

SNC

A
  • Oligodendrocitos
  • Microglia
  • Astrocitos
  • Células ependimarias
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14
Q

Neurilema

A

Capa de células

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15
Q

Vaina de mielina

A

Capa de lípidos

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16
Q

Astrocitos

A
  • Recapturan neurotransmisores
  • Transportan glucosa
  • Formación de sinapsis
17
Q

Axones

A

Regulan el flujo de iones a través de los canales y la bomba de sodio y potasio

18
Q

Despolarización

A

Se abren canales de Na+ (excitadores)

19
Q

Repolarización

A

Se cierran canales de Na+

20
Q

Hiperpolarización

A

Exceso de salida de K+ (inhibidores)

21
Q

Potencial de acción

A

Ley del todo o nada

22
Q

Axones mielinizados

A

Nódulos de Ranvier

23
Q

Sinapsis eléctricas

A

Transferencia rápida de iones y señales eléctricas

24
Q

Sinapsis químicas

A

Depende de neurotransmisores