Hosam Mohamed-
sphincters; intestine
__________ in the common bile duct prevent bile from entering the _______ prior to the next meal.
-
to move the bile from common bile duct to gall bladder
What is the role of the cystic duct?
-
ampulla of vater
Before entering the intestine, the common bile duct joins with the main pancreatic duct to form a short swollen passage.
-
endocrine; exocrine
The pancreas has both ______ and ______ glands.
-
fats, carbs, proteins
What nutrients do the pancreas digest?
-
b
Pancreatic juice is secreted into the ______.
a) ileum
b) duodenum
c) jejunum
d) sigmoid colon
-
d
________ is involved in starch digestion.
a) trypsin
b) pancreatic lipase
c) nuclease
d) pancreatic amylase
-
a
_______ is a major enzyme in pancreatic juice; responsible for protein digestion.
a) trypsin
b) pancreatic lipase
c) nuclease
d) pancreatic amylase
-
b
________ is involved in fat digestion.
a) trypsin
b) pancreatic lipase
c) nuclease
d) pancreatic amylase
-
c
_________ is involved in the digestion of nucleic acids.
a) trypsin
b) pancreatic lipase
c) nuclease
d) pancreatic amylase
-
resistance of acidic stomach secretion; protects against pepsin
What is the function of the gastric mucosal barrier?
-
soluble mucus
-mixes with contents of stomach and helps to lubricate chyme.
-
insoluble mucus
-forms a protective barrier against the high acidity of the stomach content.
-
converts pepsinogen to pepsin, provides acidic environment, denatures protein, kills bacteria, absorption of: Fe, Ca.
What are the functions of HCL (5)?
-
bile; pancreas; small intestine
HCL promotes _________ secretion from the _______ and the ______.
-
pepsinogen; gastric lipase
Chief cells secrete _______ & _______.
-
basal regions of gastric glands
Where are Chief cells located?
-
gastric glands of upper stomach
Where are mucous neck cells located?
-
mucin
Mucous neck cells secrete thin, acidic substance called ______.
-
c
Gastrin is secreted by ______
a) stomach mucosa
b) fundus
c) enteroendocrine G cells
d) pyloric antrum & duodenum
-
b
Ghrelin is secreted by _______
a) stomach mucosa
b) fundus
c) enteroendocrine G cells
d) pyloric antrum & duodenum
-
a
Histamine is secreted by _______
a) stomach mucosa
b) fundus
c) enteroendocrine G cells
d) pyloric antrum & duodenum
-
gastrin
-increases secretion by gastric glands; promotes gastric emptying
-
ghrelin
-regulates food intake
-
histamine
-stimulates parietal cells to release HCL
-
a
Seretonin is secreted in _______.
a) stomach mucosa
b) fundus
c) enteroendocrine G cells
d) pyloric antrum & duodenum
-
a,d
Somatostatin is secreted in _______.
a) stomach mucosa
b) fundus
c) enteroendocrine G cells
d) pyloric antrum & duodenum
-
serotonin
-contracts stomach muscle
-
somatostatin
-restricts all gastric secretions, motility, and emptying.
-a regulatory-inhibitory peptide
-universal "off switch"
-
Gastrin
_________ causes insertion of K+/H+ ATPase pump into apical membrane of parietal cells.
-
histamine; CCK-B
Gastrin stimulates the release of __________ by acting on _______ receptors on ECL cells.
