Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
Don't know
remaining cards
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
restart all cards
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how


GI Phys

source of gastrin G cells in antrum of stomach
source of CCK I cells in duo and jejunum
source of secretin s cells, duodenum
action of gastrin increased H+ in stomach increased growth of gatric mucosa increased gastric motility
action of CCK increases pancreatic secretions increases gallbladder contraction slows gastric emptying
action of secretin release of HCO3- decreased gastric acid secretion
regulation of gastrin decreased when stomach pH <1.5 increased when stomach is distended, presence of AA and peptides increased in vagal stimulation
regulation of CCK decreased if stomach pH<1.5 decreased by secretin increased by fatty acids and AA
regulation of secretin increased by acid, FA in lumen of duo
source of somatostatin D cells of pancreatic islets and GI mucosa
what regulates somatostatin increased by acid decreased by vagal stimulation
what is somatostatin used to treat VIPoma carcinoid tumors
what releases GIP? K cells in duo and jejunum
what does GIP do? exocrine fxn of decreasing H secretion endocrine fxn of increasing insulin release
regulation of GIP increased by fatty acids, AA, oral glucose
which is used more rapidly: oral or IV glucose? oral
source of VIP parasympathetic ganglia in sphincters, gallbladder and small intestines
action of VIP increases intestinal water absorption relaxation of intestinal smooth muscle and sphincters
regulation of VIP increased by distention and vagal stimulation decreased by adrenergic imput
what is VIPoma non-alpha, non-beta islet cell pancreatic tumor that secrete VIP --> copious watery diarrhea
action of NO on GI tract increased smooth muscle relaxation, (NB: lower P in LES)
what is implicated in decreased NO secretion accounts for incresed LES tone seen in achalasia
where is HCO3- released from? mucosal cells stomach duo
where is pepsin released from? chief cells of stomach
what controls gastric acid release increased by histamine and ACh decreased by somatostatin, GIP, PG, secretin
fxn of salivary amylase hydrolyzes alpha-1,4 linkages --> disaccharides
fxn of pancreatic amylase hydrolyzes starch to oligosaccharides and disaccharides
where is pancreatic amylase found highest [] in duo lumen
fxn of oligosaccharide hydrolase hydrolyzes oligosaccharidses --> monosaccharides RL step in carb digestion
Created by: Asclepius