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Digestion Summary 1
organ found in
enzyme
function
special fact
oral cavity,
pharynx,
oesophagus
salivary amylase
hydrolyses
starch&glycogen
yields
maltose+polysaccharides
stomach
pepsin
hydrolysis of
proteins
active at low (acidic) pH
lumen of small
intestine
pancreatic amylase
hydrolyse starch,
glycogen&
polysaccharides
yields maltose+other
disaccharides
lumen of small
intestine:active
formpancreas:inactive
form
trypsin (active form)trypsinogen (inactive
form)
breaks lg.peptides
into a.a.
activates other digestive
enzymes
lumen of small
intestine:active
formpancreas:inactive
form
chymotrypsin (active
form)chymotrypsinogen
(inactive form)
breaks lg.peptides
into a.a.
activated by trypsin
lumen of small
intestine:active
formpancreas:inactive
form
carboxypeptidase
(active form)procarboxypeptidase
(inactive form)
splits a.a. off
proteins from Cterminus
works faster with other
enzymes
lumen of small
intestine
aminopeptidase
splits a.a. from Nworks faster with other
terminus of proteins
enzymes
lumen of small
intestine
nucleases
breaks DNA or
RNA into
nucleotides
other enzymes continue the
brkdwn into sugars,
phosphates, etc
lumen of small
intestine
bile salts
coat fats to keep
them in solution"emulsification"
salts, not enzymes
lumen of small
intestine
lipase
hydrolyses fats
most fat absorbed in
duodenum portion of
sm.intestine
epithelium of
sm.intestine(brush
border)
maltase, lactase and
sucrase
yields
monosaccharides
called disaccharidases
Digestive
Term
mouth
Definition
food is broken into smaller parts and mixed with saliva. First step in digestion.
esophagus
tubelike structure that connects the mouth and the stomach.
stomach
baglike organ where food in mixed with digestive juices and turns into thick
liquid.
small intestine organ where food is mixed with more digestive juices, broken down into
nutrients, and absorbed into the body through the villi.
large intestine organ that removes water from waste material and holds solid waste until it
can leave the body.
nutrient
part of food that cells use.
Digestion Summary 1
villi
tiny fingerlike lining of small intestine.