2. The vertebral artery is the most important branch of the subclavian artery. It ascends through the upper six cervical foramina to enter the foramen magnum where it joins with the vertebral artery from the opposite side to form the basilar artery anterior to the pons. Which structure divides the subclavian artery into three parts?
a. Pectoralis minor
b. Teres Major
c. Scalenus Anterior
d. Scalenus medius
e. First rib
Friday, 16 April 2010
Answer to previous question
1. A 40 year old male motorbike rider is brought into the A&E department following a collision with a lorry. An urgent laparotomy reveals a severely damaged spleen, and pancreas. Major arterial supply to the pancreas is derived from the…..
a. Left gastric artery
b. Splenic artery
c. Right gastric artery
d. Hepatic artery
e. Gastroduodenal artery
Answer: Splenic artery
Major blood supply to the pancreatic body is derived from the arteria pancreatca magna (aka greater pancreatic artery). It is a branch off the splenic artery as it travels superior to the pancreas towards the splenic hilum. Prior to entering the splenic hilum, the splenic artery gives off approximately 6 pairs of short gastric arteries, and forms the left gastroepiploic artery which anastomoses with the right gastroepiploic/gastro-omental (branch of the gastroduodenal artery) to supply the greater curvature of the stomach and the omentum.
The arterial supply to the head of the pancreas is derived from superior (branch of the gastroduodenal artery), and inferior (branch of the superior mesenteric artery) pancreaticoduodenal artery.
Left gastric artery supplies the distal oesophagus, and anastomoses with the right gastric artery (branch of the common hepatic) to supply the short curvature of the stomach.
Hepatic artery arises from the common hepatic artery distal to the origin of the gastroduodenal artery and right gastric artery. Hepatic artery ascends to the left of the common bile duct and anterior to the portal vein to enter the portahepatis; where it divides into left and right to supply the respective lobes of liver. The right hepatic artery gives off the cystic artery which supplies the gall bladder.
a. Left gastric artery
b. Splenic artery
c. Right gastric artery
d. Hepatic artery
e. Gastroduodenal artery
Answer: Splenic artery
Major blood supply to the pancreatic body is derived from the arteria pancreatca magna (aka greater pancreatic artery). It is a branch off the splenic artery as it travels superior to the pancreas towards the splenic hilum. Prior to entering the splenic hilum, the splenic artery gives off approximately 6 pairs of short gastric arteries, and forms the left gastroepiploic artery which anastomoses with the right gastroepiploic/gastro-omental (branch of the gastroduodenal artery) to supply the greater curvature of the stomach and the omentum.
The arterial supply to the head of the pancreas is derived from superior (branch of the gastroduodenal artery), and inferior (branch of the superior mesenteric artery) pancreaticoduodenal artery.
Left gastric artery supplies the distal oesophagus, and anastomoses with the right gastric artery (branch of the common hepatic) to supply the short curvature of the stomach.
Hepatic artery arises from the common hepatic artery distal to the origin of the gastroduodenal artery and right gastric artery. Hepatic artery ascends to the left of the common bile duct and anterior to the portal vein to enter the portahepatis; where it divides into left and right to supply the respective lobes of liver. The right hepatic artery gives off the cystic artery which supplies the gall bladder.
Monday, 12 April 2010
MRCS Part A approaches
MRCS part A is about a week away, and about the time when panic spreads like wildfire amongst candidates. Our plans to get the website up and running by this month has hit major setbacks due to various work commitments, however rest assured we are working hard on it.
As a taster; I will be posting one question a day for the next week only till the website becomes online. The questions are of course written by me, and various sources have been consulted to ensure upto date answers are given. What you will see is that the explanation i shall give to the questions are not like the ones you are used to in other questions banks, but they will have complete explanations to explain why one answer is more correct than the other. Please leave feedbacks, as this will help us improve our standards and formats.
Anatomy
- A 40 year old male motorbike rider is brought into the A&E department following a collision with a lorry. An urgent laparotomy reveals a severely damaged spleen, and pancreas. Major arterial supply to the pancreas is derived from the…..
- Left gastric artery
- Splenic artery
- Right gastric artery
- Hepatic artery
- Gastroduodenal artery
The answer will be posted tomorrow. Good luck
Romesh
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