Transcript small intestine

SMALL INTESTINE
Spaghetti time!
SMALL INTESTINE
•Roughly 20 feet
•Small in diameter
•Champion digester
•Absorbs
SMALL INTESTINE
•Has 3 main parts.
•1. Duodenum
•2. Jejunum
•3. Ileum
Duodenum
Section 1
Duodenum
•First 10-12 inches
after the stomach.
•(Duodenal ulcers)
Duodenum
•Chyme- STUFF released
from the stomach by the
pyloric sphincter.
•ACIDIC!!
Duodenum
•Bile
•Comes from the liver to
neutralize acid.
•Emulsifies fat
•Adds color to feces.
Duodenum
•Pancreatic Juice:
•Comes from pancreas
•Neutralizes acid
•Releases 3 BIG enzymes
Duodenum
•Amylase:
•Starch  maltose
Duodenum
•Trypsin:
•Proteins  peptides
Duodenum
•Lipase:
•Lipids  Fatty acids
& Glycerols
Jejunum
Section 2
Jejunum
•About 8 feet long
•BULK of nutrient
absorption
Jejunum
•Intestinal juice:
prepares food to be
absorbed.
Jejunum
•Further breakdown
•Peptidase:
•Peptides  amino
acids
Jejunum
•Maltase:
•Maltose  Glucose
Ileum
•About 12 feet long
•Connects to large
intestine
Color code
•Color code the Villi
•I,K,L,M