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Medula Flashcards

1
Q

Hasta donde llega

A

L1 o L2

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2
Q

Engrosamientos

A

Plexo braquial y lumbosacro

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3
Q

Plexo braquial

A

C3 - T2

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4
Q

Plexo lumbosacro

A

L1 - L3

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5
Q

Espacio obersteiner redlich

A

Union raíz dorsal al asta dorsal

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6
Q

C6

A

Pulgar

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7
Q

Pezon

A

T4

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8
Q

Ombligo

A

T10

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9
Q

Nuca

A

C2

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10
Q

Axila

A

T2

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11
Q

Fijación duramadre

A

Frm magno

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12
Q

Epipia

A

Vasos y lig dentados

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13
Q

Saco dural

A

S2 o S3, lleno de LCR

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14
Q

Sust gris

A

H

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15
Q

Divide a la mitad

A

Tabique dorsal y fisura ventral

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16
Q

Funiculos

A

Ventral, dorsal y ,lateral

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17
Q

Surco dorsal intermedio

A

Cervical y torácico superior

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18
Q

Asta intermediolateral y nucleo dorsal de Clarke

A

C8-L2

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19
Q

Fasc cuneiforme

A

Arriba de T6

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20
Q

Surco intermedios dorsal divide en…

A

Grácil (Medial) y cuneiforme

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21
Q

Rexed I a IV

A

Exteroceptivo sensacion

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22
Q

Rexed V a VI

A

Enteroceptivo sensación, piel

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23
Q

Rexed VII

A

Último dorsal, relevo mesencefalo y cerebelo

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24
Q

Rexed VIII

A

Motor,neuronas gamma

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25
Q

Rexed IX

A

Principal motora con neuronas alfa gdes y gamma

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26
Q

Neuronas alfa

A

Extrafusales, movimiento

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27
Q

Neuronas gamma

A

Intrafusales, reflejos

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28
Q

Nucleo de Onuf

A

Columna de neuronas alfa, S1 a S4

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29
Q

Onuf ventrolateral

A

Esfinter anal y uretral externo

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30
Q

Onuf dorsomedial

A

Musc isquiopubico y bulbocavernoso

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31
Q

Neuronas alfa organizacion

A

Ventral-extensor
Dorsal-flexor
Medial-tronco
Lateral-extremidades

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32
Q

Tipos de neuronas alfa

A

Tonicas(lento) y fasicas(rapidos)

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33
Q

Interneuronas de Renshow

A

Inhibe las motoras por medio de glicina. Láminas VII a IX

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34
Q

Rexed X

A

Esfinteres, rodea canal central

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35
Q

Funiculo post

A

Propiocepcion, cinestesia y tacto discriminativo

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36
Q

Origen funiculo post

A

Ganglio dorsal

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37
Q

Receptores perifericos funiculo post

A

Mecánicos cutáneos

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38
Q

Receptores propioceptivos

A

Muscular- posición
Articular- movimiento

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39
Q

Fasciculo gracil o goll

A

Abajo T6

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40
Q

Fasciculo cuneiforme o columna burdach

A

Arriba T6

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41
Q

Fibras mediales

A

Sacras

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42
Q

Fibras pelo

A

Superficiales

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43
Q

Fibras tacto

44
Q

Camino completo

A

Medula-bulbo-lemnisco medial-talamo ventral- giro poscentral y precentral

45
Q

Fibras ascendentes,aferentes

A

85% primarias, mecanorreceptores
15% no primarias en engrosamientos medulares, mecano y nocireceptores.

46
Q

Ramas colaterales

A

Al asta posterior, inhibe impulso dolor

47
Q

Lesiones

A

Más dolor con menos estimulacion

48
Q

Estímulos que conduce

A

Pasivos,temporales y exploración activa UNICOS (formas y patrones)

49
Q

Camino del fasciculo gracil

A

Medula-nucleo clarke- fibras espinocerebelosas dorsales-nucleo Z(Bulbo ventral al gracil)-lemnisco medial-talamo

50
Q

FUNICULOS LATERAL Y ANTERIOR ASCENDENTES

51
Q

Espinocerebeloso Post

A

Propiocepcion inconsciente de músculo,tendon,articulación (fibras Ia y II) y órgano Golgi (fibras Ib)
Funiculo lat

52
Q

Neuronas provienen de

A

De nucleo Clarke, nucleo toracico, nucleo Stilling (rexed VII), rexd V y rexed VI

53
Q

Presencia

54
Q

Organizacion

A

Extremidad inferior, superficial

55
Q

Camino

A

Llegan a cpo restiforme- vermis

56
Q

Espinocerebeloso Ventral

A

De órganos tendinosos de golgi, fibras Ib. Propiocepcion inconsciente
Funiculo lat

57
Q

Camino

A

Cruzan en la médula- puente- pedúnculo cerebelosl sup- cerebelo contra. vermis y lobulo mid

58
Q

Señales

A

Actividad interneuronal y efectividad vías desc

59
Q

Fasciculo Espinocervicotalamico Morin

A

Cinestesia y tacto pasivo. Propiocepcion consciente
Funiculo lat

60
Q

Origen

A

Ganglio dorsal, atraviesa funiculo post y llega al asta post

61
Q

Camino

A

Médula funiculo post-asta dorsal(2 a 3 segmentos)- nucleo cervical lateral- cruza funiculo lat opuesto- talamo

62
Q

Espinotalamico Lateral

A

Dolor discriminativo y temperatura
Funiculo lat

63
Q

Origen

A

Fibras ganglio dorsal C lentas y ADelta rapidas

64
Q

Organizacion

A

Sacras-laterales
Cervicales-mediales
Dolor-anterior
Termico-post

65
Q

Camino

A

Fibras C y ADelta- Rexed I a III-Rexed V a VIII (2segmentos arriba)- cruzan por comisura blanca al funiculo lat opuesto- Talamo ventral- 3er orden por cápsula interna- corteza somatosensorial primaria.

66
Q

Lesion

A

Contra, inicio 1 o 2 segmentos abajo

67
Q

Vía alt dolor

A

2 aferencias medulares -
Chica - lenta, inhibe rexed II
Gde- rápida, activa rexed II y células facs T

68
Q

Rexed II

A

Centro modulador del dolor

69
Q

Espinotalamicas en asta dorsal

A

VI y VII- meca umbral low
I - Noci umbral high
IV y V - amplio rango meca y noci

70
Q

Asta dorsal neurotransmisores

A

Noradrenalina, serotonina
Sust P excita rexed I a III y encefalinas inhiben

71
Q

Fibras ADelta

A

Exitan rexed III y IV

72
Q

Fibras C

A

Exitan Rexed I a III

73
Q

Espinotalamico Anterior

A

Tacto ligero y dolor no discriminativo
Funiculo lat y ant

74
Q

Origen

A

Raíz dorsal con rexed VI a VII, cruzan por comisura blanca anterior y crean fasc

75
Q

Camino

A

Igual al de espinotalamico lat
Otras hacienden ipsi - comisura post-talamo o sust gris periacueductal.

76
Q

FASCICULOS DESCENDENTES

77
Q

Corticoespinal

A

Facilitan flexoras,movimiento fino dedos
Ant- cuello y tronco
Lat-extremidades

78
Q

Origen

A

Giro precentral, boradmann 4 y giro prefrontal broadmann 6

79
Q

Camino

A

Decusacion piramidal - funiculo lateral - Corticoespinal lateral
Si no cruzan en decusacion piramidal- Corticoespinal anterior haz de Türck

80
Q

Corticoespinal ant

A

Hasta C6 o C7

81
Q

No cruzan

A

2%, se quedan en fasc Barnes

82
Q

Rubroespinal

A

Facilitan flexoras e inhibe extensoras , corrige corticoespinal
Funiculo lat

83
Q

Origen

A

2/3 post nucleo rojo mesencefalo

84
Q

Camino

A

Nucleo rojo- descusacion tegmental ventral- funiculo lat- rexed IV a VII

85
Q

Vestibuloespinal lateral

A

Facilitan extensores, erguido
Funiculo lat

86
Q

Camino

A

Nucleo vestíbular puente- rexed VII y VIII. NO cruza

87
Q

Vestibuloespinal medial

A

Facilitan flexoras, posición cabeza
Funiculo anterior

88
Q

Camino

A

Nucleo vestibular medial- une con contralaterales- rexed VII y VIII

89
Q

Reticuloespinal

A

Pontino- funiculo ant, extensor
Medular- funiculo lat, flexor

90
Q

Camino

A

Formación reticular bulbo y puente- rexed VII y VIII

91
Q

Tectoespinal

A

Giro de la cabeza

92
Q

Camino

A

Coliculo sup- decusacion tegmental dorsal- funiculo ant- rexed VI a VIII

93
Q

Autónoma descendente

A

Músculo liso y glándulas
Funiculo anterolateral

94
Q

Camino

A

Hipotalamo- columna intermediolateral - funiculo anterolateral

95
Q

Sx horner

A

Lesión arriba de T1, miosis, ptosis, y enoftalmos (retracción ojo)

96
Q

Monoaminoenertico Descendente

A

Dolor y modulación dolor
Funiculo ant y lat

97
Q

Origen

A

Nucleo del rafe bulbo, nucleo locus coeruleus puente, mesencefalo caudal y sust gris periacueductal

98
Q

Glutamato

A

Excita rapido

99
Q

Sustancia P, peptido intestinal y somoatostatina

A

Excita lento

100
Q

Donde hay más neuropeptidos

A

Región lumbosacra

101
Q

Metaencefalina y somatostatina inhiben …

A

La liberación de sust P, noci

102
Q

Locus coeruleus

A

Noradrenalina inhibe noci

103
Q

Reflejos miotáctico

A

Estira, fibras 1a alfa inhibe antagonistas

104
Q

Reflejo miotactico inverso

A

Relaja con antagonistas, fibras 1b golgi, inhibe las alfa

105
Q

Reflejo flexor

A

Nocirreceptivo, alejar del estímulos, fibras III

106
Q

Reflejo extensión cruzada

A

Por comisura anterior y facilita extensoras

107
Q

Lesión art adam kuweitz

A

Espinal anterior, afección motora

Neuro (6 decks)

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