CHEMICAL DIGESTION
Part of the
alimentary
canal
Mouth
Juices
secreted
Site of
production
Enzymes
present
Substrate
Product
saliva
Salivary gland
Salivary
amylase
starch
maltose
oesophagus
stomach
none
Gastric juice
Walls of
stomach
pepsin
proteins
Small
intestine
duodenum
Pancreatic
juice
Pancreas
Pancreatic
amylase
bile
Other
substances in
juice
Functions of
other
substances
polypeptides
Hydrochloric
acid
Starch
maltose
Sodium
hydrogen
carbonate
Provide acidic
medium for
pepsin
Kills
microorganisms
Reduce acidity
of chyme
trypsin
proteins
polypeptides
lipase
fats
Fatty acids
and glycerol
none
Liver, stored
in gall bladder
illeum
No juice
secreted;
enzymes
remain in or
on the cells
By cells
covering the
villi
maltase
maltose
glucose
sucrase
sucrose
lactase
lactose
Glucose and
fructose
Glucose and
galactose
Bile salts
Emulsify fats
Bile pigments
Excretory
products
covering the
villi
peptidase
polypeptides
Amino acids
lipase
fats
Fatty acids
and glycerol