GI 4 Flashcards
4 important organs of the GI tract
- esophagus
- stomach
- small intestine
- colon
esophagus function
transport food entering mouth to stomach
stomach role
digestion, some absorption
small intestine role
absorption and digestion
different micornutrients absorbed in different parts
colon role
fluid/electrolyte absorption
propulsion/holding feces
vitamin produciton (gut microbiome)
GERD =
gastroesophageal reflux disease
GERD is characterized by
- transient lower esophageal sphincter relaxation
- increased intra-abdominal pressure
dietary triggers of GERD
caffeine
alcohol
lifestyle risk factors for GERD
obesity
pregnancy
exercise after eating
GERD pathophys
increased exposure of esophageal mucosa to __
impacts local microbiome and stimulate __ response
increased intracellular __
GERD pathophys
increased exposure of esophageal mucosa to gastric contents
impacts local microbiome and stimulate immune response
increased intracellular permeability
IBD = __ immune dysregulation due to interaction between __ microbiota and __ immunity
IBD = mucosal immune dysregulation due to interaction between intestinal microbiota and host immunity
IBD genetics
host must be genetically susceptible
IBD diagnosis
- symptoms (dermatological, vascular, respiratory, inflammatory)
- exams, stool tests, imaging, biopsy
IBD diagnosis requires high __ (detects inflammation) and low __ (tells us you are in active IBD)
IBD diagnosis requires high calprotectin (detects inflammation) and low albumin (tells us you are in active IBD)
IBD: __ immune defects involving __ receptors
IBD: innate immune defects involving pattern recognition receptors