Transcript No Slide Title - Fenn Schoolhouse

Alimentary Canal
•Mouth
•Esophagus
•Stomach
•Small Intestine
•Large Intestine (colon)
Glands
•Salivary Glands
•Gastric Glands
•Liver
•Gall Bladder
•Pancreas
salivary
glands
epiglottis
mouth
Alimentary Canal
Glands
Other organs
gall
bladder
liver
pancreas
small
intestine
appendix
large
intestine
(colon)
Digestion: The process of
changing large molecules
into smaller molecules
Chemical Digestion
•enzymes act on food
•break large particles
into small particles
Absorption: The process of
small molecules going
Into the bloodstream
Mechanical Digestion
•chewing & churning
•break large particles
into small particles by
physical means
amylase
amylase
In Mouth
Amylase in saliva
begins the breakdown
of starch to maltose
Starch (polysaccharide)
In Stomach
amylase
amylase
amylase
amylase
Stomach acid
de-activates amylase
and starch digestion
stops
amylase
amylase
Starch (polysaccharide)
In Small Intestine
Amylase from the
pancreas continues the
breakdown of starch
to maltose
Maltase breaks down
maltose to glucose
maltase
maltase
Maltose (disaccharide)
maltase
In Small Intestine
maltase
Maltase completes the
digestion of maltose to
glucose
Glucose
(monosaccharide)
Villi
Glucose is absorbed by
the villi
Protein (large polypeptide chain)
In Stomach
pepsin
pepsin
Stomach acid
activates pepsin and
the breakdown of
protein into smaller
molecules begins
pepsin
pepsin
Smaller amino acid chains
(dipeptide)
trypsin
chemo trypsin
peptidase
Protease enzymes
complete the digestion
of peptides to single
amino acids
amino acids are
absorbed by the villi
polypeptides
Amino acid
Amino acid
Villi
In Small Intestine
In Small Intestine
Bile from the liver &
gall bladder breaks
down (emulsifies)
large lipids particles to
smaller droplets
Bile
Bile
Bile
In Small Intestine
lipase
lipase
Fatty acid
molecules
Villi
Lipase from the
pancreas breaks down
smaller droplets into
fatty acids & glycerol
before they are
absorbed by the villi.
Starch (polysaccharide)
Large protein
(polypeptide)
Maltose Sugar (disaccharide)
Small protein
(dipeptide)
Glucose Sugar (monosaccharide)
Amino acid
Large Lipid
molecule
Small Lipid
Droplet
Fatty acid molecule