Well, we’ve covered a lot today.
We’ve covered the major functions
of the gastrointestinal system.
These primarily are
involved with absorption
in which you need to have digestion
and secretions to have occurred
as well as you need to have enough motility
to move this throughout the GI system.
We also talked a lot about the
three phases of digestion.
And remember that was the cephalic,
the gastric, and intestinal phase.
And finally, we spent a long time
talking about the various molecules
that we’ll discuss
during the GI system.
In fact, there are a lot
these signalling molecules
and may feel a little bit
overwhelming right now,
but that’s okay because you
need to be introduced to them
because they become part of your
vocabulary so we can use them
throughout the rest of
the gastrointestinal system.