The Digestive system Flashcards
G cells
secrete gastrin
Gastrin
stimulates Chief cells to secrete pepsinogen and parietal cells to secrete HCL and intrinsic factor.
Aminopeptidase
Brush border peptidase secreted by duodenum
Enteropeptidases
activates Trypsinogen and Procarboxypeptidases A and B
Trypsin
Cleaves and activates chymotrypsinogen
Protein digestion sites and enzymes involved
Stomach -Pepsin Small Intestine -Trypsin -Chymotrypsin -Carboxypeptidases - Aminopeptidase - Dipeptidase
sucrase
Brush border enzyme from duodenum
Hepatic portal system
capillaries from the stomach and digestive tract become veins that travel into hepatic portal veins, this vein enters the liver, another set of capillaries are encountered, liver processes the venous blood, then it goes to inferior vena cava.
enteric nervous sytem
the gastrointestinal tracks own nervous system beside the PNS and CNS