So that's a general overview
of what we are looking at.
But its primarily an unpaired artery that
comes from the inferior mesenteric.
And now let's go on to explore the
branches of the internal iliac artery.
So let's start off, we have got
a cartoon here on the screen.
And we have also got this flow diagram
which is showing the high level of
complex arterial branches that are
coming from the internal iliac.
If we start with the posterior division, we
can see that it is only giving rise to these
three branches. And this really
can depend on what
say text book you use to look out when you revising
or what resources; because, most resources
will comment on posterior and anterior divisions.
But not all of them will say the same
arteries are found in the anterior
or in the posterior division. And
I personally don't think it matters.
I think it's important to understand the arteries and
where they have come from, where they go to
But the actual specific details, whether it comes
from the posterior division or an anterior division
I am personally not sure that makes a massive difference.
Being able to locate them and say what they supply
is the key here really.
So let's concentrate on the
posterior division. We have three
important arteries, the iliolumbar artery
if we follow the common iliac
we then follow the internal iliac, and we
have this posterior division here.
We can see it gives rise to three
branches: iliolumbar artery which we can see here.
A lateral sacral artery which we
can see here. And then it terminates
by passing out of the pelvis
superior to piriformis muscle
through the greater sciatic foramen, remember
we spoke about that few lectures ago,
as the superior gluteal artery. This doesn't
actually supply anything in the pelvis
It passes out to supply the gluteal region,
the musculature in the gluteal region
So the posterior division has these three
branches: iliolumbar, lateral sacral
and superior gluteal. And we
can see these branches here.