Tejido Nervioso Flashcards

1
Q

division anatomica

A

SNC (encefalo y medula espinal)
SNP

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2
Q

division fisiologica

A

SNS (bajo control propio)
SNA (involintaria, se divide en parasimpatica y enterica

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3
Q

neurona

A

unidad funcional
tiene un soma (aqui esta el nucleo)
recibe estimulos

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4
Q

celulas de sosten (gliales o glia)

A

cerca de las neuronas
SNC
1.oligodendrocitos
2. astrocitos
3.microglials
4. ependimocitos
SNP:
1. celulas de schwann
2. celulas satelites

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5
Q

barrera hematoencefalica

A

vasos snaguineos separados del tejido nervioso por las laminas basales y tejido conjuntivo

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6
Q

neuronas aferentes sensitivas

A

impulsos desde receptores a SNC
1. Somaticas: dan dolor, temperatura, tacto, presion
2. Viscerales: dolor

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7
Q

motoneuronas eferentes

A

impulsos desde SNC o ganglios hasta las celulas efectoras
1. somaticas: dan impulsos voluntarios a los M. esqueleticos
2. viscerales: impulsos involuntarios a M. liso, fibras de purkinje, glandulas

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8
Q

interneuronas intercalares

A

combinacion de aferentes y eferentes

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9
Q

componentes de la nuerona

A
  1. soma: tiene al nucleo
  2. axon: da impulsos desde la celula hasta una terminacion especializada (sinapsis)
  3. dendritas: envaginaciones cortas que transmit impulsos desde la periferia hacia el soma
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10
Q

clasificacion de neuronas

A
  1. multipolares
  2. bipolares
  3. unipolares
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11
Q

neuronas multipolares

A

tiene un axon y dos mas dendritas

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12
Q

neuronas bipolares
checar

A

un axon y una dendrita

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13
Q

neuronas unipolares

A
  1. dendritica periferica
  2. axon central (va al SNC)
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14
Q

CORPUSculos de nissl

A

el citoplasma perinuclear tinene muchos RER y ribosomas

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15
Q

enfermedad de parkinson

A

perdidas de C. secretoras de dopamina en la sustancia negra
incremento de glioles y acumulacion de nuerofilamentos intermedio (cuerpos de lewy8

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16
Q

espinas dendriticas

A

protusiones de la membrana plasmatica que tiene actina

17
Q

dendritas implicadas en

A

la memoriza, el aprendizaje, corteza cerebral