Digestive 1: Intro Flashcards

1
Q

What are the QUATRE COUCHES of the digestive tract?

A
  1. MUQUEUSE
  2. SOUS-MUQUEUSE
  3. MUSCULEUSE
  4. SEREUSE (ou ADVENTICE)
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2
Q

What does the MUQUEUSE layer comprise?

A

ÉPITHÉLIUM: prismatique simple (sauf œsophage et canal anal (pavimenteux stratifié))

CHORION: tissu conjonctif lâche, vaisseaux sanguins et lymphatiques; nerfs; leucocytes, plasmocytes, amas lymphocytaires (îlots et follicules)

MUSCULARIS MUCOSAE: couche de cellules musculaires lisses, limite de la muqueuse, la sépare de la sous-muqueuse

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3
Q

What do we find in the sous-muqueuese?

A

Tissu conjonctif plus dense que le chorion

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4
Q

What do we find in the couche MUSCULEUSE?

A

couche circulaire interne
couche longitudinale externe

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5
Q

What is MUSCULARIS MUCOSAE?

A

Muscle of the muqeuse

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6
Q

If you see lymphocytes in the digestive layer cut, where might you be?

A

Muqueuse, specifically in CHORION:

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7
Q

De quelle type de tissu n’est pas composee le chorion:
tissu conjonctif dense
vaisseaux sanguins
nerfs
plasmocytes

A

tissu conjonctif dense

becasue it is tissu conjonctif lache

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8
Q

Where do we find tissu conjonctif dense?

A

SOUS-MUQUEUSE

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9
Q

What is the exception of the musculeuse?

A

couche circulaire interne
couche long. externe

but not stomach -> it also has oblique interne

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10
Q

What type of muscle lines the digestive tract? What are the exception?

A

muscle lisse
sauf œsophage supérieur et moyen
sphincter anal -> strie

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11
Q

True or False, unlike other parts of the digestive tract, the oesaphagus has a muscularis mucosae composed of striated muscle

A

FALSE,

Muscular layer is striated but the muscularis mucosae is always LISEE

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12
Q

In what layer do we find the Plexus de Meissner?

A

Plexus de Meissner ou plexus sous-muqueux

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13
Q

What is plexus myentérique ou d’Auerbach?

A

Plexus between the two muscular layers
musculeuse circulaire interne
musculeuse long externe

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14
Q

What are the organs that are not covered by a sereuse?

A

Oesophage (supra diaphragmatic)
rectum and anal canal

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15
Q

La couche perietale est couverte par quel type de cellule?

A

mésothélium (épith. pav. simple)
tissu conjectif

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