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ch 34 GI fxn terms

GI fxn terms

absorption small molecules, vitamins, and minerals pass thru walls of sm & lg intestine into blood stream
achalasia absence of peristalsis of lower esophagus, results in dysphagia, regurgitation and pain
amylase enzyme that aids in digestion of STARCH
anus last section of GI, outlet for waste
chyme mix of food/saliva, salivary enzymes, & gastric secretions. produced by food passing thru mouth, esophagus & stomach
digestion digestive enzymes, secretions, food mix. proteins, fats, and sugars broken down into smaller molecules
dyspepsia indigestion; upper abdominal discomfort @ with eating
elimination occurs after digestion and absorption, when waste products are evacuated from body
esophagus collapsible tube connecting mouth/stomach, food passes thru
GI fibroscopy intubation of a part of the GI system with flexible, lighted tube to assist in Dx and Tx of diseases
hydrochloric acid secreted by glands in stomach; mixes with chyme, to break down to absorbable molecules and aid in destruction of bacteria
ingestion food taken into GI tract via mouth and esophagus
intrinsic factor gastric secretion that combines with VitB12 so that the vitamin can be absorbed
large intestine portion of GI tract, receives waste material from sm intestine, absorption continues & elimination begins ascending / transverse / descending / sigmoid / rectum
lipase enzyme aids in digestion of fats
pepsin gastric enzyme important in protein digestion
small intestine longest part of GI tract. duodenum, jejunum, ileum. chyme passes thru, begins to be absorbed
stomach distensible pouch into which food bolus passes to be digested by gastric secretions
trypsin enzyme that aids in digestion of proteins
scintigraphy radionuclide testing use of isotopes (technetium, iodine, indium)
Created by: rtcdavis