disorders of the digestive system Flashcards
term for cold sores in the oral cavity
herpes stomatitis
term for canker sores in the oral cavity
apthous somatitis
trouble swallowing
dysphagia
inner layer that lines the GI tract
mucosa
layer of GI tract that contains blood vessels, glands, and missner’s plexus
submucosa
layer of the GI tract that contains circular & longitudinal muscle, myenteric/auerbach’s plexus, performs peristalsis
muscularis
outter connective tissue layer of the GI tract
serosa
GI tract function: movement through the GI tract
motility
GI tract function: breakdown of food/chyme
digestion
GI tract function: transfer of substances across an epithelial layer either into the GI tract or blood
secretion and absorbption
GI tract function: holding and removing digested substances
storage and elimination
the intrinsic nervous system in the GI system
enteric nervous system
what controls the digestive system
autonomic nerves and hormones
phase of gastric function: regulation by the vagus nerve, lasts around 30 minutes
cephalic phase
phase of gastric function: vagus nerve directly stimulates chief cells to secrete pepsinogen to digest proteins
cephalic phase
phase of gastric function: activation of the vagus nerve indirectly causes the parietal cells to secrete HCL
cephalic phase
phase of gastric function: stimulated by distension of the stomach, chemical nature of chyme
gastric phase
phase of gastric function: goal is to release hydrochloric acid and proteolytic enzymes into the stomach
gastric phase
phase of gastric function: stimulated by peptides, stimulates pepsinogen and acid secretion
gastric phase
phase of gastric function: causes inhibition of gastric activity due to neural reflex and hormones
intenstinal phase
phase of gastric function: stretch of the duodenum inhibits gastric motility and secretion
intenstinal phase
phase of gastric function: fat in the chyme stimulates an inhibitory hormone
intestinal phase
mix of food and acids in the stomach
chyme
chyme in the duodenum stimulates what 3 functions
gastric inhibition, pancreatic secretion, bile secretion
what controls pancreatic juice secretion
secretin and chlolecystokinin
hormone stimulated by a drop in duodenal pH
secretin
hormone stimulated by fats and proteins in the duodenum
cholecystokinin
disorder of oral cavity: caused by herpes simplex type 1
herpes stomatitis
disorder of oral cavity: blisters form, followed by ulceration and hard palate
herpes stomatitis