So obviously as you can see here, it's got these little branches, these gastric branches
which is given off to both surfaces of the stomach.
And it's also got omental branches which descend to supply the greater omentum.
So I've switched back to this diagram with its stomach in its normal orientation.
So you've got the splenic artery here.
It's got this long tortuous course and it enters the hilum of the spleen.
It gives out the little short gastric arteries to the fundus of the stomach.
And it also gives off the left gastroepiploic artery.
So obviously this runs behind the stomach, but I'm just drawing on to illustrate.
And then you've got the little pancreatic branches here given off to the neck, body
and tail of the pancreas.
So you can see the left gastroepiploic artery running across here and the gastric branches
supplying both surfaces of the stomach.
You've got these vessels here which descend and supply the greater omentum.
So if you remember in my peritoneal tutorial, the greater omentum hangs down in front of
the small intestine.
So something worth mention is that I've been referring to this artery as the 'gastroepiploic',
but you might see it referred to as the gastro-omental artery.
So it's worth bearing that in mind.
So now we're coming on to the final branch of the celiac trunk.
This is the common hepatic artery.
You can see it here.
As it comes off the celiac trunk, it turns right.
It has two terminal branches.
So it gives off the proper hepatic artery, which goes to the liver (which I'm showing
you here) and it's got the gastroduodenal artery, which descends to supply the duodenum
and the head of the pancreas.
So it also gives off a branch which supplies the surface of the stomach and we've seen
this branch before.
It's the right gastroepiploic artery.
It's called the gastroduodenal artery because it gives off a branch to the stomach, the
gastro- part and it gives off a branch which supplies the duodenum, so the --duodenal part.
So it's the gastroduodenal artery.
So if you've been listening carefully to this tutorial, you'll know what this branch is
here.
This is the right gastric artery, which anastomoses with the left gastric artery.
The original of the right gastric artery is variable.
It can come off the common hepatic artery or it can come off the proper hepatic artery.
But what you need to know is that it comes off and it runs along the lesser curvature
of the stomach and anastomoses with the left gastric artery.
So the common hepatic splits into the proper hepatic and the gastroduodenal artery.
Let's follow the proper hepatic artery to the liver.
So you can see here those two clear divisions and there's no prizes for guessing what these
two are.
So the one on the left is the left hepatic artery and the one on the right is the right
hepatic artery.
This division occurs just before it enters the porta hepatis.
You can also see this little vessel given off.
This comes off the right hepatic artery and it's called the cystic artery.
It supplies the gallbladder.
So you can see the gallbladder, this little sac here.
So finally, we've got to take a look at this other branch of the common hepatic artery,
the gastroduodenal artery.
So there's no duodenum in this picture, so I'm going to flick over to the other diagram
I showed you.
We're looking at this descending branch here, the gastroduodenal artery.
So before the gastroduodenal artery descends, it sometimes gives off a branch called the
supraduodenal artery, which supplies the top part of the duodenum.
So we've go the pylorus here of the stomach and you've got the duodenum with its C-shape
sitting around the head of the pancreas.
So the first branch we'll look at is this one coming off here.
You can see it curves around the greater curvature of the stomach.
So hopefully you will know what this is because we saw the other one before coming off the
left of the splenic artery.
That was the left gastroepiploic artery.
So this branch coming off the gastroduodenal artery is the right gastroepiploic artery
and it anastomoses with the left gastroepiploic artery.
So the next branch of the gastroduodenal artery is the superior pancreaticoduodenal artery.
It's quite a mouthful, but it is very descriptive of what the artery does and where it's located.
It's 'superior' because there's also an inferior one and it's called 'pancreaticoduodenal'
because it supplies the head of the pancreas and also, the duodenum.
So there is an inferior pancreaticoduodenal artery, which comes off this superior mesenteric
artery.
So like we've seen all these anastomosing vessels, we've seen the left gastric anastomosing
with the right gastric on the lesser curvature of the stomach.
We've seen the left gastroepiploic and the right gastroepiploic anastomosing on the greater
curvature of the stomach.
And now we're seeing an anastomosis between the superior pancreaticoduodenal artery and
the inferior pancreaticoduodenal artery.
So the superior pancreaticoduodenal artery comes off the gastroduodenal artery and it
supplies the duodenum and the head of the pancreas.
It anastomoses with the inferior pancreaticoduodenal artery which comes off the superior mesenteric
artery.
So just to further confuse things, the superior pancreaticoduodenal artery and its inferior
counterpart have anterior and posterior branches.
It's not shown on this diagram, but I'm going to draw it on to illustrate it for you.
So here we've got the anterior superior pancreaticoduodenal artery because it lies anterior to the head
of the pancreas, but also, the anterior superior pancreaticoduodenal artery also gives off
a posterior branch which runs behind the pancreas.
And then it joins up again with the inferior pancreaticoduodenal artery.
So just to recap things, you've got the celiac trunk.
Then you've got the common hepatic artery, which gives off the proper hepatic artery,
which sends off branches to the liver and the gallbladder.
And then you've got the gastroduodenal artery, which sends off branches to supply the head
of the pancreas and the duodenum as well as this branch supplies the surface of the stomach
and anastomoses with the branch from the splenic artery.
So the gastroduodenal artery gives off the right gastroepiploic artery and then it gives
off the superior pancreaticoduodenal artery.
And the superior pancreaticoduodenal artery gives off branches anteriorly and posteriorly.
These branches unite inferiorly to form the inferior pancreaticoduodenal artery, which
is given off by the superior mesenteric artery.
So that's the branches of the celiac trunk.
I really hope that's cleared things up.