11 secretion gastrique Flashcards

1
Q

4 cells gastriqu et ce qu elles secretent?

A
  • parietales: hcl + fi
    principales : pepsinogene + lipase gastrique
    à mucus
    endocrines: deveresnet dans le sg, cells G gastrine Cellules D somatostatine
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

caracteristiques suc gastrique

A
  • incolore, inodore, ph acide, un peu visqueux suite au mucusu, debit 1.5 à 2l/j
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

activation vers pepsine? action

A

-par l’hcl de la pepsinogene puis retrocontrole positif continu

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

2 composants du suc gastrique? par qui? debit?

A

-un compossant acide par les celleule sparietales, concentration max débit variable selon l intensité
composant alcalin par les cell autres no parietales c et intensite both cte

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

regulation comment est elle

qui active qui

A

-gastrine par cellules g active cells parietale spour secreter de l HCL
nerf vague -> cellules G // -> cellules principales meilleur que la gastrine // sensibilisation des cellues parietale à la gatrine (synergie vago gastrinique)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

qui inhibe qui

A
-somatostatine
retrocontrole ph dependant
VIP
GIP
Secretine
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

hypersec -> 2 exemplees

A

-ZOllinger ellison celules G

Ulcere gastro dudenal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

insuff un exemple

A

-gastrite chroique atrophique (de’ cls parietale e tprincipales (HP)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly