Gastric Physiology

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Can you name the Gastric Physiology?

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T/F: Rate of gastric emptying increases with rectal and colonic distention.
pespinogen and HCl are released into the lumen of the stomach... where is histamine released?
Hypoglycemia ___ (increase or decreases) gastric emptying.
How does potassium get out of the parietal cell?
___ are hormones released by the duodenum and cause feedback on stomach to decrease gastric emptying and secretions
severely delayed gastric emptying or no emptying
failure of the pyloric sphincter to relax for gastric emptying... leads to projectile vomiting
Peptide tyrosine-tyrosine (PYY) and glucagon like peptide (GLP1 and GLP2) ____ (stimulates/inhibits) gastric emptying
Cl ions are transported into the lumen of the stomach using which type of transport protein?
2 causes of peptic ulcers
P/D1 cells release what hormone?
Which histamine receptor is found on the basolateral membrane of the parietal cell?
this hormone acts at the hypothalamus to suppress appetite
this hormone acts on the G cell in the antrum of the stomach to inhibit the release of gastrin
essential for binding and absorption of vitamin B12
T/F: Prilosec or Omeprazole acts at the basolateral membrane of the parietal cell.
Cl ions are transported into the parietal cell using which type of transport protein?
T/F: Tagemet and cimetidine prevent acid production by blocking H1 histamine receptors
T/F: Proton pump inhibitors bind irreversibly to the H/K proton pump.
T/F: In some cases of peptic ulcer disease, acid from the stomach erodes the D cells of the stomach preventing the brake mechanism for acid production.
these cells produce histamine
made by the S cells of the duodenum
these cells produce pepsinogen and gastric lipase
T/F: ECL cells can be activated by acetylcholine or gastrin
these cells produce somatostatin
made by the I cells of the duodenum
The gland of the stomach is known an ____ gland.
These cells in the stomach are activated by the H+ions in the stomach to reduce the release of gastrin
these cells produce HCl and intrinsic factor
The movement of Cl into the parietal cell is coupled to the movement of which ion out of the cell?
these cells produce gastrin
what activates pepsinogen?
T/F: Ileal fat increase gastric emptying.
2nd messenger involved in activation of the parietal cell
P/D1 cells are located where?
T/F: Ghelin is released during fasting which stimulates appetite
Secretin ____ (promotes or inhibits) gastric emptying
occurs due to uncontrolled gastric emptying due to the lack of feedback inhibition by the duodenum and undigested food makes it to the colon
T/F: After a large meal, the alkaline tide (removal of bicarbonate from the parietal cell) causes an increase in the pH of the blood.
T/F: An increase in pH (basicity) slows gastric emptying.
T/F: Large volumes in the stomach increase gastric emptying
enzyme important for the production of protons and bicarbonate in the parietal cell
Nutrients in the ileum and the colon influence gastric emptying through the _____ mechanism
CCK ____ (promotes or inhibits) gastric emptying
T/F: The parietal cell can be activated by Acetylcholine, histamine, or gastrin.
All stomach cell types are activated by the neurotransmitter (from the enteric nervous system) Acetylcholine, except which cell?
responsible for getting H+ ions into the lumen of the stomach
which two products of oxidative phosphorylation are important for the production of stomach acid.
T/F: The stomach is the major site for digestion.
The superficial epithelial cells along with which other cell type in the stomach act to lubricate and protect the stomach wall?
leptin is release by which type of tissue?
H2 blockers prevent the binding of ____ to prevent the production of acid.
occurs due to a defiency in vitamin B12, which inhibits the body's ability to go through erythropoesis
prilosec or omeprazole acts by inhibiting what?
This type of drug inhibits prostaglandin related defense mechanisms within the stomach

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Created Mar 25, 2012ReportNominate