Chapter 2: Digestion Flashcards
Name the layers of the intestinal lumen
Mucosa, Submucosa, Muscularis Externa, Serosa
Name the three layers of the mucosa
mucosal membrane, lamina propria, muscularis mucosea
Name the two main enzymes in saliva that break down carbohyrates
lingual ligase and salivary alpha amylase
What is the function of HCL
break down food, kill bacteria, decrease pH, and denature proteins
Name some hormones associated with digestion
gastrin, CCK, somatostatin, secretin, pepsinogen –> pepsin
Function of mucosal membrane
secrete mucus
this can be found in the lamina propria and submucosa
lymph, blood vessels
function of plexus of Mysenaine
regulate blood flow and muscular contractions in the GI tract
what are the three salivary glands
sublingual, paratid, submandibular
what is saliva made of
H20, Na+, Cl-, K+, mucus, amylase, lingual ligase, antibacterial components, R protein
what does lingual ligase do
break down triglycerides, high levels in infants for milk and fat digestion
what is GERD
when increased pressure causes esophageal sphincter to open and gastric acid to rise into the esophagus
what occurs in the stomach after food has left
the reduction of chyme volume and pH change trigers release of somatostatin
Name things that inhibit gastric motility and/or secrertion
cholecystokinin, secretin, peptide YY, somatostatin, substance p, vasoactive intestinal polypeptide
Name things that inhibit intestinal motility
glucagon-like peptides, peptide YY, secretin
