Transcript 2.30 Recall that bile is produced by the liver and stored in

2.30 Recall that bile is produced by the liver and stored in the
gall bladder, and understand the role of bile in neutralizing
stomach acid and emulsifying lipids.
 Bile is made in the liver and stored in the gall bladder.
 It is a greenish yellow alkaline liquid.
 The function of bile is to neutralize the acidic contents,
which come out of the stomach and enter the small
intestine.
 It also breaks lipids into small droplets to increase the
surface area for digestion by lipases.
Bile
Lipase - Enzyme
Large Lipid drop
 In the diagram above the lipase enzymes can only
digest around the outside of the large lipid drop, this
does not provide a very large surface area for them to
work on and so digestion will be slow.
Bile
Bile
Small Lipid Drop
 In the diagram below the bile is emulsifying the lipid
into small droplets.
 This provides a much larger surface area for lipases to
act on and digestion is much quicker.