You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
Slow-wave: Konstant bølge af en mindre depolarisering uden AP. Dette betyder at der er en rytmisk<br />
strøm hele tiden i mave-tarmkanalen. Når Føde og væsker skal skubbes igennem vha.<br />
muskelarbejde begynder et AP at skyde der hvor slow wave peaker.<br />
HORMONE SOURCE TARGET ACTION<br />
Cholecystokinin I cells in duodenum and jejunum and<br />
neurons in ileum and colon<br />
Gastric-inhibitory<br />
peptide<br />
Pancreas<br />
Gallbladder<br />
↑ Enzyme secretion<br />
↑ Contraction<br />
K cells in duodenum and Jejunum Pancreas Exocrine: ↓ fluid absorption<br />
Endocrine: ↑ insulin release<br />
Gastrin G cells, antrum of stomach Parietal cells in body of<br />
Stomach<br />
Gastrin-releasing<br />
peptide<br />
Vagal nerve endings G cells in antrum of<br />
Stomach<br />
Glucagon α Cells of pancreatic islets of<br />
Langerhans<br />
↑ H + secretion<br />
↑ Gastrin release<br />
Liver ↑ Glycogenolysis<br />
↑ Gluconeogenesis<br />
Guanylin Ileum and colon Small and large intestine ↑ Fluid absorption<br />
Motilin Endocrine cells in upper GI tract Esophageal sphincter<br />
Stomach Duodenum<br />
Neurotensin Endocrine cells, wide-spread in GI<br />
tract<br />
Peptide YY Endocrine cells in ileum and colon Stomach<br />
Pancreas<br />
↑ Smooth-muscle contraction<br />
Intestinal smooth Muscle Vasoactive stimulation of<br />
histamine release<br />
↓ Vagally mediated acid<br />
secretion<br />
↓ Enzyme and fluid secretion<br />
Secretin S cells in small intestine Pancreas ↑ HCO3- and fluid secretion<br />
by pancreaticducts<br />
Somatostatin D cells of stomach and duodenum, δ<br />
cells of pancreatic islets<br />
Stomach ↓ Gastric-acid secretion<br />
Stomach ↓ Gastrin release<br />
Intestine ↓ Fluid absorption/↓ secretion<br />
↓ Smooth-muscle contraction<br />
Pancreas ↓ Endocrine/exocrine<br />
secretions<br />
Liver ↓ Bile flow<br />
Substance P Enteric neurons Enteric neurons Neurotransmitter<br />
Vasoactive intestinal<br />
peptide<br />
ENS neurons Small intestine ↓ Smooth-muscle relaxation<br />
↓ Secretion by small intestine<br />
Pancreas ↓ Secretion by pancreas
Change language