00:01
Welcome!
In this lecture we will be
discussing the digestive system.
00:07
First let's look
at the functions
of the digestive system.
00:11
In our digestive system,
We're going to take in food
break it down into
nutrient molecules
absorb those molecules
into the bloodstream
and then rid the body of
any indigestible remains.
00:26
The organs of the
digestive system
are going to fall
into two main groups.
00:31
You have the
alimentary canal also
referred to as the GI tract,
which is a continuous
muscular tube
that runs from the
mouth to the anus.
00:42
In this canal we're
going to digest food
by breaking it down
into smaller fragments.
00:48
Also in the canal,
we're going to absorb these
fragments through the lining
into the blood.
00:55
The organs of the alimentary
canal include the mouth,
the pharynx, the
esophagus, the stomach
the small intestine,
the large intestine and the anus.
01:07
Along with the organs
of the GI tract
to the alimentary canal.
01:11
We also have some
accessory digestive organs
that play an important
part in digestion.
01:17
These include the
teeth, the tongue
the gallbladder,
the digestive glands
which are going to
produce secretions
that help break down food stuff,
including the salivary gland,
the liver and the pancreas.
01:34
So here we have a depiction
of the digestive organs
in the digestive system.
01:40
Again, starting at the beginning
we have the mouth
followed by the
pharynx, the esophagus
which leads into the stomach,
the small intestine,
large intestine, the rectum
and then out through the anus
also we have our
accessory structures
including the tongue, the teeth
the liver,
the gallbladder and the pancreas.