Science / Gastric Physiology

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Can you name the Gastric Physiology?

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

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