And it's vital in the compaction
and storage of faeces. So let's go onto
explore the anatomy of the large intestine.
We see this diagrams
before immolation to the small intestine.
And once again we can see that we have
the greater omentum which is hanging,
it is hanging from the
transverse colon which we can see here.
And the greater omentum this apron-like structure
is hanging from it. Removing the greater omentum
reveals again parts of the Jejunum and
Ileum in the central region.
And we can also now pickup the
underside of the transverse colon here
and we can also see the ascending colon.
So food is going to be traveling up in this
indigestible remnants of the ingested foods
is going to be passing up in this direction
then it will go across ultimately
descending down in this direction.
So it's following that inverted "U" shape.
If we move on to the second series of diagrams,
which again we have seen before
this time we have mobilized the small intestine,
which is possible because of the mesentery.
And again in this diagram here we can
see that we have this ascending colon.
We can see the junction of the Ileum
and the large intestine here
this is the ileocecal junction. And we can
also see that in this region
below the ileocecal junction we also
have the cecum and then this blind
pouch the appendix. Again the ascending colon, transverse colon
over in this direction, the spleen would be
positioned up here. So this is where we have the
Splenic Flexure. And then the Splenic Flexure
is the point where the colon starts
to descend and we have the descending colon
running in this direction.
We then have a piece of the colon
that is mobilized like the small intestine.
This piece of colon also has a
mesentry and here we can see we have the
sigmoid colon. Just here we have
what's known as the sigmoid mesocolon.
I will explore these colon, these mesocolons
and mesentery in more detail
later on. But we can see the sigmoid colon here as a mesentery
is then continuous with the rectum.
Another parts of the colon also has a
mesentery attached to it.
And that is the transverse colon here.
And this membranous shelf which we can see here
when the transverse colon is elevated,
is the transverse mesocolon.
And these are the two parts of the large intestine
that have a mesentery attached
to them, the transverse colon and the transverse mesocolon
and the sigmoid colon and the sigmoid mesocolon.
These give these regions greater mobility.
The appendix attached to the cecum
also has a small mesentery, the meso-appendix.
But like I said, I will
explore these mesenteries in a later lecture.