Download Digestive #3 - Iowa State University

GI System 3:
Session 3
Supplemental Instruction
Iowa State University
Leader:
Course:
Instructor:
Date:
Blake
AnS 214
Dr. Selsby
9-8-15
Self-Quiz:
1. Which of the following cells produce HCl?
a.
b.
c.
d.
Parietal cells
G cells
Chief cells
Enteroendocrine cells
2. Which of the following cells produce pepsinogen?
a. G cells
b. Enteroendocrine cells
c. Parietal cells
d. Chief cells
3. The increased concentration of HCO3- in blood draining from the stomach is called ______.
a. Bicarbonate loading.
b. The alkaline tide.
c. The chloride shift.
d. The enterogastric reflex
4. The enzyme used to form the acid that donates a proton (H+) for HCl production in the stomach
is called __________.
a. Enterokinase
b. Lingual lipase
c. Gastrin
d. Carbonic anhydrase
5. The hormone that is secreted in the pyloric gland that stimulates HCl and pepsinogen production
during digestion is ______________.
a. Histamine
b. Gastrin
c. CCK
d. Secretin
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A. Regulation of gastric motility.
1) Name and define activating factor
for the 3 phases of gastric function.
1. __________________:
2. __________________:
3. __________________:
2) Fill in the blanks on the diagram at
right with the controls on gastric
motility.
B. Liver and gallbladder.
1) Name the 4 functions of the liver
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2) Bile, while produced by the ___________________ is stored in the ___________________. It
is an ___________________ solution, and consists of cholesterol derived
___________________, the pigment ___________________, as well as cholesterol, neutral fats,
phospholipids and electrolytes.
C. The pancreas.
1) What functions of the pancreas are categorized as exocrine?
Endocrine?
2) Fill in the diagram with the zymogens produced in the pancreas on the left, and the activated
product on the right. Write the activating enzyme for each above the arrow:
_____________________ -------------------------> ________________________
______________________ ------------------------ >_______________________
_______________________ -------------------------> ________________________
D. Hormonal control of intestinal secretions.
1) Name the three main hormones of the enteroendocrine system and define their functions.
1._______________________:
Activated by:
2._______________________:
Activated by:
3._______________________:
Activated by:
2) Use the diagram on the right, to help answer the following
fill in the blank questions about hormonal control of secretions.
1. Acid and fats from the stomach stimulate the secretion of
_________________ and _________________ from the
_________________.
2) Both hormones enter the bloodstream.
3) CCK induces the pancreas to secrete _________________,
while secretin causes it to secrete _________________.
4) _________________ and _________________, traveling
through the bloodstream, induce the increases production of
bile in the liver.
5) _________________ causes the gallbladder to contract and
expel its contents into the _________________.
6) During the _________________ and _________________ phases, vagal nerve stimulation
causes the gallbladder to contract.
A. SI anatomy
1) The three parts of the small intestine, in order, are...
2) Name and define the 3 structural features of the SI that increase its surface area.
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