Download And through a series of chemical reactions, break down these

Functions of Pancreatic Juice
1. Bicarbonate ions (HCO3–) in pancreatic juice are basic, so they
neutralize the excess acid in the chyme.
2. Pancreatic juice contains enzymes which break down proteins
into amino acids.
3. Pancreatic juice contains enzymes which break down fats into
fatty acids.
4. Pancreatic juice contains enzymes which break down
carbohydrates into simple sugars.
5. Amino acids, fatty acids, and simple sugars can be absorbed
into the bloodstream. This happens further down in the small
intestine.
And through a series of chemical reactions, break down these carbohydrates into
simple sugars.
Functions of Pancreatic Juice
1. Bicarbonate ions (HCO3–) in pancreatic juice are basic, so they
neutralize the excess acid in the chyme.
2. Pancreatic juice contains enzymes which break down proteins
into amino acids.
3. Pancreatic juice contains enzymes which break down fats into
fatty acids.
4. Pancreatic juice contains enzymes which break down
carbohydrates into simple sugars.
5. Amino acids, fatty acids, and simple sugars can be absorbed
into the bloodstream. This happens further down in the small
intestine.
So we’ll summarize here that pancreatic juice brings enzymes that break down
complex carbohydrates into simple sugars in the duodenum.
Functions of Pancreatic Juice
amino
acids
fatty
acids
1. Bicarbonate ions (HCO3–) in pancreatic juice are basic, so they
neutralize the excess acid in the chyme.
2. Pancreatic juice contains enzymes which break down proteins
into amino acids.
3. Pancreatic juice contains enzymes which break down fats into
fatty acids.
4. Pancreatic juice contains enzymes which break down
carbohydrates into simple sugars.
5. Amino acids, fatty acids, and simple sugars can be absorbed
into the bloodstream. This happens further down in the small
intestine.
simple
sugars
The amino acids, fatty acids, and simple sugars that are produced by chemical digestion in the
duodenum can be absorbed into the bloodstream. This happens further down in the small intestine.
Functions of Pancreatic Juice
1. Bicarbonate ions (HCO3–) in pancreatic juice are basic, so they
neutralize the excess acid in the chyme.
2. Pancreatic juice contains enzymes which break down proteins
into amino acids.
3. Pancreatic juice contains enzymes which break down fats into
fatty acids.
4. Pancreatic juice contains enzymes which break down
carbohydrates into simple sugars.
5. Amino acids, fatty acids, and simple sugars can be absorbed
into the bloodstream. This happens further down in the small
intestine.
You may want to pause the video take a screen shot, and print this so you can use it to study from.
Now we’ll have a look at the rest of the small intestine.
We’ll imagine some of the chyme leaving the duodenum and moving through the rest of the small
intestine. Most of the nutrients get absorbed as it slowly makes its way through.
Now, we’ll take a closer look at what is happening on the inside wall of the intestine…
As we zoom into the wall, we see it has finger-like projections on it.
villi
These projections on the inside surface of the intestine are called villi. These are present throughout the whole
small intestine. Having all these folds greatly increases the inner surface area of the intestine. Because nutrients are
absorbed though this surface, the villi enhance our ability to absorb nutrients.
microvilli
villi
The cells covering the inner surface of the small intestine have very tiny, hair-like projections. These are called
microvilli. The presence of these increase the surface area for absorption of nutrients by another huge factor.
Now, we’ll examine a single villus in more detail.
blood
vessel
Small blood vessels go into each villus