Lecture 5 Flashcards
what substance stimulates bicarbonate secretion
secretin
what do duct cells secrete
bicarbonate
when is CCK released
in response to the fat/amino acids in the duodenum
when secretin is secreted what happens to the bicarbonate secretion
it increases in the duodenum, pancreas and bile duct
what happens to the sphincter of Oddi when the gallbladder contracts
it relaxes, causing the pancreatic secretions flowed into the duodenum
what is BER
basic electrical rhythm
what cells produce peristaltic wave
pacemaker cells
where are the pacemaker cells in the stomach
longitudinal muscle layer
if there is fat/acid/amino acid/hypertonicity in the duodenum what happens to the motility in the stomach
it is inhibited
what is the frequency of segmentation determined by
BER (basic electrical rhythm)
as the BER moves down the intestine, does it increase or decrease
decrease
what does MMC mean
migrating motility complex
describe the motility when food arrives in the stomach
MMC stops and segmentation starts, up until the there is no food left in the stomach, then MMC starts again
what hormone is used for the initiation of MMC
motilin
