Download Hormonal Control of Digeston

Hormonal Control of
Digestion
Chap 12 p 220
What are hormones?
Hormones:
• A substance made by one set of cells that affects a
different, specific set of cells
• Endocrine Function: transported to target in blood
Hormones in Digestion
Hormone
Stimulated
By:
Made By:
1. Gastrin
High
By lower
protein meal stomach
Site of
Action
Description
of Action
Upper
Stomach
Increases
production
of Gastric
Juice
Hormones Digestion
Hormone
2. Gastrin
Inhibitory
Peptide
(GIP)
Stimulated
By:
Increased
activity of
gastral
glands
Made By:
Site of
Action
Duodenum Upper
(first part of Stomach
small
intestine)
Descriptio
n of Action
INHIBITS
production
of gastric
juice
Hormones in Digestion
Hormone
Stimulated
By:
Made By:
Site of
Action
Description
of Action
3. Secretin
Acid in
chyme
Duodenum
Pancreas
Gallbladder
Stimulates
release of
pancreatic
juices
& of bile
Hormones Digestion
Hormone
Stimulated Made By:
By:
4. CCK
(CholeCystoKinin)
Partially
digested
protein &
fat
Site of
Action
Duodenum Pancreas
Gallbladder
Description
of Action
Stimulates
pancreatic
juices
Stimulates
release of bile
The Small Intestine
• Pg 219-220
Small Intestine
• Chemical Digestion
 in Duodenum (first 25cm)
• Absorption
 Villi