Intestino Flashcards

0
Q

Funciones del intestino delgado

A
  1. Absorcion

2. Secrecion

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1
Q

INTESTINO DELGADO

A
  1. Cilindrico simple
  2. Duodeno
    Yeyuno
    Ileon
  3. Celulas
    A. Caliciformes
    B. Absortivas superficiales
    C. Sist estimulacion cel.
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3
Q

Aumento des uperficie de absorcion de mucosa ID

A
  1. Pliegues circulares / valvulas Kerckring/ plica
  2. Vellosidades intestinales / vili
  3. Microvellosidades
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4
Q

Pliegues circulares / valvulas kierckring / plicas

A
  1. Visibles macroscopicamente

2. Formados por mucosa y submucosa

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5
Q

Vellosidades intestinales o Vili

A
  1. Dan textura aterciopelada
  2. Soloen ID
  3. Se ven en M/O
    4 formadas por lam propia de mucosa
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6
Q

Microvellosidades

A
  1. IG/ ID
  2. Especializaciones de cel absortivas en memb plasmatica
  3. Solo con M/ E
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7
Q

Glandulas ID

A
  1. Cel caliciformes
  2. Cel mucosas de brunnes
  3. Criptas de Lieberkuhn
    4 gland anexas . Higado y pancreas exocrino
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8
Q

Criptas de lieberkhun

A
  1. Gland tubulares entre vellosidades
  2. Cel de Paneth ( en el fondo ) ID
    Secretan proteinas y producen enzimas Nnnnndigestivas
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9
Q

Celulas de Lieberkhun

A
  1. Cel caliciformes
  2. Cel endocrinas.
  3. Cel absorbentes / enterocitos
  4. Cel indiferenciadas
  5. Cel Paneth
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10
Q

DUEODENO

A
  1. Porcion prox del id
  2. Inicia: parte del piloro
  3. Final : angulo duodenoyeyunal
  4. 20-30 cm largo
  5. Ep cilindrico simple
  6. Cel cilindricas y caliciformes
  7. Gland brunner y vellosidades
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11
Q

YEYUNO

A
  1. 2.8 m
  2. Inicia: angulo duodenoyeyunal
  3. Porcion central del abdomen
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12
Q

ILeon

A
  1. 4m
  2. Inica: despues del yeyuno
  3. Final : valvula ileocecal
  4. Hipogastrio y cavidad pelvica
  5. Nodulos linfaticos en lam propia PLACASD E PEYER
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13
Q

Capas del ID

A
  1. Mucosa
    Pliegues circulares( no desaparecen al distenderse)
    Se divide ( de pared a luz)
    A. Muscular de la mucosa
    Separa mucosa y submucosa
    B. Capa media
    Lam propia, producc anticuerpos
    C. Capa externa
    Capa de cel epiteliales cilindricas
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14
Q

INTESTINO GRUESO partes

A
  1. Ciego
  2. Apendice
  3. Colon ascendente
  4. Colon transverso
  5. Colon descendente
  6. Colon sigmoides
  7. Recto
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15
Q

Mucosa IG

A
  1. Ep cilindrico simple
  2. Muchas cel caliciformes ( mas q ID)
  3. Evitan que el material fecal erosione epitelio
  4. Criptas mas profundas (que Id)
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16
Q

Criptas de IG

A

Mas profundas

  1. Colon ascendente tienen peq cel cilindricas
  2. Colon desc y recto vesículas secretoras en vertice
  3. Epitelio ana, y rectal no tienen
17
Q

Submucosa Ig

A

Lamina propia tc laxo

18
Q

Muscular de la mucosa Ig

A
  1. Foliculos linfoides ( apendice cecal)

2. Muscular externa forma tenias colonicas / tenias del colon

19
Q

Serosa IG

A

De tc cel mesoteliales

Apéndices epiploicos ( protuberancias de tejido adiposo)

20
Q

Capas del id 2

A
2. Submucosa
    Vasos sang, linf y nervios
    Plexo de meissner
3 muscular
   Externa long
   Interna circ
   Plexo auerbach
4. Serosa
    Capa más e externa
     Cel mesoteliales