Vasculature of the Abdomen Flashcards
Where does the aorta terminate?
L4 - bifurcates into right and left common iliac arteries
What structure can the aorta be classified as?
Large elastic artery
In descending order, what are the branches of the thoracic aorta?
- Mediastinal arteries
- Oesophageal arteries
- Pericardial arteries
- Superior phrenic arteries
- Intercostal and subcostal arteries
What are the first and second intercostal spaces supplied by?
A branch from the subclavian artery
Where does the abdominal aorta begin?
At the level of T12
In descending order, what are the branches of the abdominal aorta?
- Inferior phrenic arteries
- Coeliac trunk
- SMA
- Middle suprarenal arteries
- Renal arteries
- IMA
- Median sacral artery
- Lumbar arteries
Where does the coeliac trunk arise?
From the anterior aspect of the aorta at aortic hiatus of diaphragm –> level of T12
Where does the SMA arise?
Lower level of T1
Where does the IMA arise?
Arises anteriorly at L3
What does the coeliac trunk divide into?
3 major branches:
- Left gastric artery
- Splenic artery
- Common hepatic artery
What direction do the branches of the coeliac trunk go?
Left –> left gastric and splenic artery
Right –> common hepatic artery
What does the left gastric artery give rise to?
Ascends across the diaphragm, giving rise to oesophageal branches before continuing anteriorly along the lesser curvature of the stomach
What happens when the left gastric artery gets to the lesser curvature of the stomach?
It anastomoses with the right gastric artery
Where does the splenic artery run?
After arising, it travels left towards the spleen, running posterior to the stomach and along the superior margin of the pancreas.
During its course, where is the splenic artery contained?
Within the splenorenal ligament
Where doest the splenic artery terminate?
It terminates into five branches which supply the segments of the spleen.
As well as supplying the spleen, what else does the splenic artery give rise to?
- Left gastroepiploic
- Short gastrics
- Pancreatic branches
What does the left gastroepiploic supply? What does it anastomose with?
Greater curvature of the stomach
Anastomoses with the right gastroepiploic artery
What do the short gastrics supply?
The fundus of the stomach
What does the common hepatic artery branch into?
The proper hepatic and gastroduodenal arteries
Where does the proper hepatic artery run?
Ascends through the lesser omentum towards the liver
What does the proper hepatic artery give rise to?
- Right gastric
- Right and left hepatic
- Cystic
What does the right gastric artery supply?
Supplies the pylorus and lesser curvature of the stomach.
What does the right and left hepatic supply?
Divide inferior to the porta hepatis and supply their respective lobes of the liver.
What does the cystic artery supply?
Branch of the right hepatic artery – supplies the gall bladder.
What is the cystic artery a branch of?
Right hepatic artery
What is the gastroduodenal artery a branch of?
The common hepatic artery
Where does the gastroduodenal artery run?
Descends posterior to the superior portion of the duodenum
What are the branches of the gastroduodenal artery?
Right gastroepiploic and superior pancreaticoduodenal
What does the right gastroepiploic supply?
Supplies the greater curvature of the stomach. Found between the layers of the greater omentum, which it also supplies.