332 test 2 Flashcards
what secretion increases when you eat and during stress
gastrin secretion
what does gastrin do?
stimulates gastric glands to secrete HCl, pepsinogen, and histamine
what stimulates histamine to be released in mucosa of stomach
gastrin
what does histamine in the stomach do
stimulates acid secretion
what stimulates acetylcholine in the stomach
vagus and local nerves in the stomach
what does acetylcholine do to the stomach
stimulates the release of pepsinogen and acid secretion
what do prostaglandins do
regulate perfusion to stomach, regulates mucus to release bicarb, and controls acid amount secreted by parietal cells
what do the parietal cells do
secrete HCl and intrinsic factor
what do chief cells do
release pepsinogen to breakdown protein
what happens if your stomach is empty but your stressed so your stomach is still secreting gastrin and histamine
gastrin stimulates stomach to release pepsinogen which is turned into pepsin and can cause ulcers
what is intrinsic factor needed for
absorption of B12
what happens in your stomach when you eat food
Food stimulates gastrin
Gastrin stimulates parietal cells to release HCl, intrinsic factor, histamine, and stimulates chief cells to release pepsinogen
Histamine stimulates more acid secretion
Pepsinogen - breakdown protein and turn into pepsin
Intrinsic factor needed for B12 absorption
risk factors to gastritis/peptic ulcer disease
alcohol, stress, caffeine, fatty meals, NSAID use, H. Pylori, smoking (vaping)
Gastritis
inflammatory erosion in the stomach related to increased HCl
not considered an ulcer until
erosive factors that have overcome protective factors get deep enough to hit the bloodstream
is gastritis does not resolve it can turn into
chronic gastritis or peptic ulcer disease
signs and symptoms of gastritis
epigastric pain, nausea, vomiting, GI bleeding
chronic gastritis can cause
pernicious anemia
what is pernicious anemia
anemia due to low B12 absorption
hematochezia vs melena
both are a type of GI bleed. hematochezia is bright red filled with blood clots, not digested blood- shows problem in lower GI. Melena is coffee ground - dark, digested blood from upper GI
treatment for gastritis
soft bland diet, but if from h. Pylori should take antibiotics
what lab do you want to pay attention to with gastritis
H&H
what meds can people take for gastritis
PPIs or H2 blockers
what happens to the GI mucosa in peptic ulcer disease
the GI mucosa is digested by pepsin