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Leader:
Course:
Instructor:
Date:
Digestive System
Supplemental Instruction
Iowa State University
Kristina
AnS 214
Selsby
9/10/2014
1. Complete the table. Not all boxes will be filled for every row.
Inactive Hormone
Activating
Active Substance Function
(if applicable)
Factor
Trypsinogen
Enterokinase, Trypsin
Protein
trypsin
digestion,
activation of
other
hormones
Chymotrypsinogen
Trypsin
Chymotrypsin
Protein
digestion
Procarboxypeptidase Trypsin
Carboxypeptidase Protein
digestion at
carboxyl end
None
Acid and fat
CCK
Inhibit gastric
in small
secretion and
intestine
motility
None
Acid and fat
Secretin
Inhibit gastric
in small
secretion and
intestine
motility
None
Increase in
Gastrin
Increase
stomach pH
stomach
secretions
None
Food
Salivary Amylase Starch
digestion
None
Carbohydrates Pancreatic
Starch
Amylase
digestion
Pepsinogen
HCl
Pepsin
None
Proteins
Aminopeptidase
None
Proteins
Dipeptidase
None
RNA
RNase
None
DNA
DNase
None
Fat in
duodenum
High blood
sugar
Pancreatic Lipase
None
Insulin
Location
Pancreas
Pancreas
Pancreas
Duodenum
Duodenum
G cells
Mouth
Pancreas
Protein
digestion
Protein
digestion at
amine end
Break up
dipeptides
Degrade
RNA
Degrade
DNA
Fat digestion
Chief cells/
stomach
Brush border
Lower blood
sugar
Pancreas
Brush border
Pancreas
Pancreas
Pancreas
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None
None
None
Low blood
sugar
Alcohol
Glucagon
Alcohol
Dehydrogenase
Bile
None
Fat in
duodenum
Food
None
Food
Histamine
None
Food
HCl
None
HCl
Lingual Lipase
None
Serotonin
None
Acid and fat
in duodenum
Acid and fat
in duodenum
Bacteria
None
Bacteria
Lysozyme
None
Food
Mucus
None
Acid and fat
in small
intestine
None
ACh
Somatostatin
Ig A
Raise blood
sugar
Alcohol
digestion
Fat
emulsification
Increase
stomach
secretions
Increase
stomach
secretions
Activate
pepsin, break
up cells walls,
kill bacteria
Digest fats
Inhibit gastric
secretion
Inhibit gastric
secretion
Inhibit
bacterial
growth
Kill bacteria
Lubrication
for
swallowing
Gastric Inhibitory Suppress
Peptide
gastric
secretion and
motility
Pancreas
Stomach
Liver/
gallbladder
Stomach
Enteroendocrine
cells
Parietal cells/
stomach
Mouth, active in
stomach
Stomach
Stomach
Mouth
Mouth
Mouth
Duodenum