GI physiology Flashcards
what digests in the mouth
starch (mechanical)
what enzyme is in the mouth
ptyalin: salivary amylase
what glands are in the mouth
parotid, submandibular, sublingual
function of the esophagus
transport
what cells are in the esophagus
mucus cells
what digests in the stomach
protein
what enzyme digests collagen
pepsin
what cells are in the stomach
chief cells, g cells, parietal cells (oxynitic cells)
what do chief cells secrete
pepsinogen
what cell secretes gastrin
g cells
what cells secreate HCL and intrinsic factor
parietal cells
what is the purpose of rugae
increase surface area
what is pernicious anemia
damage to mucosa
what happens in the duodenum
fat digestion and starch digestion
what enzymes are in the duodenum
pancreatic lipase and amylase
what cells are in the duodenum and what do they secrete
brunners cells
secretes alkaline mucus
where is the sphincter of oddi located
duodenum
what additional contents are in the duodenum
cck, bicarbonate
how long is the duodenum
10-12inches
function of jejunum
peptide, dissacharide digestion and absorption
what enzyme is in the jejunum
carboxy-peptidase
where does carboxy-peptidase come from
pancreas