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Suite système digestif Flashcards

(11 cards)

1
Q

Quel quantité de liquide le côlon absorbe dans une journée?

A

1500ml par jour

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2
Q

Où se fait l’absorption dans le côlon?

A

Surtout proximale (au début)

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3
Q

Qu’est-ce que le côlon peut absorbé?

A

Eau
Na
Cl

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4
Q

QU’est-ce que contiennent les selles et en quelle proportion?

A

Eau (3/4)

Matière solide soit bactéries et fibres (1/4)

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5
Q

D’où vient la couleur des selles?

A

D’un dérivé de la bilirubine.

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6
Q

D’où vient l”odeur des selles et des gaz?

A

Bactéries

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7
Q

Quels sont les deux types de diarrhée?

A
  1. Absorption diminuée (diarrhée osmotique)

2. Sécrétion augmenté augmentée (entérotoxines)

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8
Q

D’où viennent les gaz dans le tube digestif?

A

Estomac: on avale de l’air
Petit intestin: HCl + NaHCO3= H2CO3 = H2O + CO2
Gros intestin: bactéries qui fermentent les fibres.

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9
Q

Comment se fait la circulation veineuse du tube digestif?

A

Drainage des veines intestinales vers la veine porte et le foie puis la circulation systémique. (tout passe au foie sauf les CM)

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10
Q

Qu’est-ce qui contrôle les vaisseaux sanguins du tube digestif et comment?

A
  • SNP: Vasodilation donc augmentation de la circulation

- SNS : vasoconstriction donc diminution de la circulation

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11
Q

Qu’Est-ce qui peut causer une vasoconstriction de la circulation gastrointestinale?

A

Choc ou exercice violent.

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