Abdomen Practice Questions

Q: The pancreas is supplied by all of the following arteries except

Left gastric. ***Left gastric*** - The **left gastric artery** primarily supplies the lesser curvature of the stomach and the abdominal esophagus. - It does not directly supply the pancreas; pancreatic blood supply originates from branches of the splenic, common hepatic, and superior mesenteric arteries. *Splenic* - The **splenic artery** gives rise to multiple branches that supply the pancreas, including the great pancreatic artery, dorsal pancreatic artery, and caudal pancreatic arteries. - These branches are crucial for the blood supply to the body and tail of the pancreas. *Common hepatic* - The **common hepatic artery** gives rise to the gastroduodenal artery, which further branches into the anterior and posterior superior pancreaticoduodenal arteries. - These arteries supply the head of the pancreas and the duodenum. *Superior mesenteric* - The **superior mesenteric artery** gives rise to the inferior pancreaticoduodenal arteries (anterior and posterior branches). - These arteries anastomose with the superior pancreaticoduodenal arteries to supply the head of the pancreas and the uncinate process.

Q: The transition between the stomach and duodenum is marked by

vein of Mayo. The transition between the stomach and duodenum is marked by ***vein of Mayo*** - The **vein of Mayo** (also known as the **prepyloric vein**) is a consistent landmark located on the anterior surface of the **pylorus**, making it a reliable surgical indicator for the gastroduodenal junction. - Its presence signifies the anatomical boundary between the **stomach** and the **duodenum** (specifically, the pylorus and duodenal bulb). *incisura* - The **incisura angularis** is a prominent anatomical landmark on the lesser curvature of the stomach, representing the junction between the body and the pyloric antrum of the stomach. It is shown as a major division in the anatomy of the stomach [1]. - It is located within the stomach itself and does not mark the transition to the duodenum. *hepatoduodenal ligament* - The **hepatoduodenal ligament** is part of the lesser omentum that connects the liver to the duodenum. - While it is anatomically close, it is a peritoneal fold containing structures like the portal triad, not a direct landmark for the gastroduodenal junction. *gastroduodenal artery* - The **gastroduodenal artery** is a major artery that branches from the common hepatic artery and supplies portions of the stomach and duodenum. - It is an important blood vessel in the region but does not serve as an anatomical surface landmark for the transition between the stomach and duodenum.

Q: Normal anatomical narrowings of the ureter are present in all EXCEPT:

Crossing the abdominal aorta. ***Crossing the abdominal aorta*** - The ureter passes anterior to the **abdominal aorta** but this location does not represent a physiological narrowing. - While it's an anatomical relationship, it does not impede urine flow in the same manner as the other listed narrowings. *Ureteropelvic junction* - This is a well-known site of **physiological narrowing** where the renal pelvis funnels into the ureter. - It is a common site for **calculi (kidney stones)** to lodge due to its constricted lumen. *Entering bladder wall* - The ureter traverses the **wall of the bladder** obliquely, creating another physiological narrowing. - This anatomical arrangement acts as a **ureterovesical valve**, preventing vesicoureteral reflux. *Ureteric orifice* - The ureteric orifice, where the ureter opens into the bladder, is the **narrowest point** in the ureter. - This final constriction can also be a site of **stone impaction**.

Q: Which one of the following statements regarding Cantlie's line is correct?

Runs between gall bladder fossa and middle hepatic vein. ***Runs between gall bladder fossa and middle hepatic vein*** - **Cantlie's line** is an imaginary plane that divides the **functional left and right lobes of the liver** [1]. - This line extends from the **gallbladder fossa anteriorly** to the groove for the **inferior vena cava posteriorly**, functionally aligned with the **middle hepatic vein** [1], [3]. *Runs between gall bladder fossa and right hepatic vein* - The **right hepatic vein** typically lies further to the right, dividing the **right anterior and right posterior segments** of the liver [3]. - Cantlie's line is specifically defined by the **major fissure** where the **middle hepatic vein** resides [1]. *Runs between gall bladder fossa and right branch of portal vein* - The **portal vein branches** are located deeper within the liver parenchyma and indicate segmental anatomy rather than the primary functional division [1], [2]. - Cantlie's line is defined by the **major fissure (middle hepatic vein)**, not a portal vein branch [1]. *Runs between gall bladder fossa and left branch of portal vein* - The **left portal vein branch** supplies the functional left lobe and is not involved in defining the primary plane between the functional right and left lobes [1]. - This anatomical landmark relates to the **middle hepatic vein** and the **gallbladder fossa** [1].

Q: Which of the statements regarding Calot's triangle are correct? 1. Common hepatic duct forms the medial boundary of the Calot's triangle 2. Inferior surface of the right lobe of the liver forms the superior boundary of Calot's triangle 3. Right hepatic artery is usually found as a content of the Calot's triangle 4. Cystic duct and medial border of gall bladder forms the lateral border of Calot's triangle Select the correct answer using the code given below:

1, 2 and 4. ***1, 2 and 4*** - The **common hepatic duct** indeed forms the medial boundary, the **inferior surface of the right lobe of the liver** forms the superior boundary, and the **cystic duct along with the medial border of the gallbladder** forms the lateral boundary of Calot's triangle. - The **cystic artery** is typically a content of Calot's triangle [1], not the right hepatic artery. *1, 2 and 3* - While statements 1 and 2 are correct regarding Calot's triangle boundaries, statement 3 is incorrect as the **cystic artery**, not the right hepatic artery, is the usual content [1]. - The **right hepatic artery** typically branches off the proper hepatic artery superior to Calot's triangle, or runs *posterior* to this triangle, not within it [1]. *1, 3 and 4* - Statements 1 and 4 are correct descriptions of the boundaries of Calot's triangle. However, statement 3 is incorrect because the **right hepatic artery** is generally not found within Calot's triangle [1]. - The typical content found within this triangle is the **cystic artery**, which supplies the gallbladder [1]. *2, 3 and 4* - Statements 2 and 4 correctly describe the superior and lateral boundaries of Calot's triangle. Nevertheless, statement 3 is incorrect because the **right hepatic artery** is not a characteristic content of Calot's triangle [1]. - The **common hepatic duct** forms the medial boundary, which is statement 1 and is correct, but not included in this option.

Q: In the intraoperative image of congenital hernia repair, the structure marked by the red arrow is identified as which of the following?

Testicular vein. ***Testicular vein*** - The **testicular vein** is clearly visible within the **spermatic cord** structures, which are typically identified and often dissected during congenital hernia repair. - Its position coursing with the testicular artery and vas deferens is consistent with its anatomical location within the inguinal canal. *Femoral vein* - The **femoral vein** lies more inferiorly and medially within the femoral canal, distinct from the inguinal canal contents visualized in this image. - Identification of the femoral vein would be in the context of a femoral hernia repair, not typically a congenital (indirect inguinal) hernia. *Obturator vein* - The **obturator vein** is located deep within the pelvis, accompanying the obturator nerve and artery through the obturator foramen. - It is not typically encountered or visible during a standard open or laparoscopic inguinal hernia repair. *Inferior epigastric vein* - The **inferior epigastric vein** runs superiorly and medially, forming the medial border of the **inguinal triangle (Hesselbach's triangle)**. - While it's an important landmark in hernia repair (differentiating direct vs. indirect hernias), its anatomical position and trajectory are distinct from the structure indicated by the arrow, which is part of the spermatic cord.

Q: Anterior relations of third part of duodenum are all except?

Fundus of gallbladder. ***Fundus of gallbladder*** - The **fundus of the gallbladder** is located more superiorly and anteriorly, typically lying near the ninth costal cartilage, and is not an anterior relation of the third part of the duodenum. - The third part of the duodenum lies mainly at the level of the **L3 vertebra**, far removed from the gallbladder fundus. *Jejunum* - The **jejunum**, being part of the mobile small intestine, can lie anterior to the third part of the duodenum. - These two structures are anatomically close and can overlap. *Root of mesentery* - The **root of the mesentery** crosses anterior to the third part of the duodenum, attaching to the posterior abdominal wall. - This is a key anatomical landmark that helps fix the position of the small intestine. *Superior mesenteric artery* - The **superior mesenteric artery** and vein both cross **anterior** to the third part of the duodenum as they emerge from beneath the pancreas. - This anatomical relationship is clinically relevant in conditions like superior mesenteric artery syndrome.

Q: Identify the position of the appendix marked in BLACK in the given image:

Retrocecal. ***Retrocecal*** - The **retrocecal** position (represented by the black color in the image) indicates the appendix is located behind the cecum, often a common variant. - This position can make diagnosis of appendicitis challenging as it may cause atypical pain patterns. *Pelvic* - The **pelvic** appendix descends into the true pelvis, which can mimic gynecological or urological conditions. - It usually causes pain that is more generalized in the lower abdomen or suprapubic region. *Subcecal* - The **subcecal** appendix is located directly below the cecum and is a relatively rare position. - While somewhat straightforward in presentation, it is less common than retrocecal or pelvic positions. *Preileal* - The **preileal** position indicates the appendix lies in front of the terminal ileum. - This is a less common anatomical variation, often associated with specific clinical presentations related to its anterior location.

Q: A CT scan of the abdomen reveals a mass in the pancreatic uncinate process. Which of the following structures is most likely to be compressed by this mass?

Superior mesenteric vein. ***Superior mesenteric vein*** - The **uncinate process** of the pancreas hooks around the **superior mesenteric vessels**. Therefore, a mass in this region would most directly compress the **superior mesenteric vein (SMV)** and artery (SMA). - Compression of the SMV can lead to **venous outflow obstruction** from the small intestine, potentially causing **bowel ischemia** or edema. *Common bile duct* - The **common bile duct** passes through the **head of the pancreas**, not typically the uncinate process. - Compression of the common bile duct would more commonly be associated with masses in the **head of the pancreas**, leading to **jaundice**. *Portal vein* - The **portal vein** is formed by the union of the **splenic vein** and the **superior mesenteric vein**, generally posterior to the neck of the pancreas. - While pancreatic masses can affect the portal vein, a mass specifically in the uncinate process would more directly impinge on the SMV before significantly affecting the main portal vein, which is superior and posterior to the uncinate process. *Splenic vein* - The **splenic vein** runs along the **posterior aspect of the body and tail of the pancreas**. - A mass in the uncinate process, located at the inferior margin of the head, is relatively distant from the splenic vein.

Q: Testicular artery is a branch of -

Abdominal aorta. ***Abdominal aorta*** - The **testicular arteries**, also known as **gonadal arteries**, originate directly from the anterior aspect of the **abdominal aorta**. - They typically arise just inferior to the **renal arteries** at the level of the second lumbar vertebra (L2) and descend to supply the testes. *Common iliac artery* - The common iliac artery is a terminal branch of the **abdominal aorta**, but it gives rise to the internal and external iliac arteries, not directly the testicular artery. [2] - It bifurcates at the level of the sacroiliac joint. [3] *External iliac artery* - The external iliac artery primarily supplies the **lower limb** and gives off the inferior epigastric and deep circumflex iliac arteries. [1] - It does not directly provide branches to the testes. *Internal iliac artery* - The internal iliac artery primarily supplies the **pelvic organs**, gluteal region, and perineum. - While it has numerous branches, none of them are the main gonadal arteries; it contributes to the blood supply of the reproductive organs through other smaller branches. [3]

Question 1

The pancreas is supplied by all of the following arteries except

Accepted Answer

Left gastric

Answer

Splenic

Answer

Common hepatic

Answer

Superior mesenteric

Question 2

The transition between the stomach and duodenum is marked by

Accepted Answer

vein of Mayo

Answer

incisura

Answer

hepatoduodenal ligament

Answer

gastroduodenal artery

Question 3

Normal anatomical narrowings of the ureter are present in all EXCEPT:

Accepted Answer

Crossing the abdominal aorta

Answer

Ureteropelvic junction

Answer

Entering bladder wall

Answer

Ureteric orifice

Question 4

Which one of the following statements regarding Cantlie's line is correct?

Accepted Answer

Runs between gall bladder fossa and middle hepatic vein

Answer

Runs between gall bladder fossa and right hepatic vein

Answer

Runs between gall bladder fossa and right branch of portal vein

Answer

Runs between gall bladder fossa and left branch of portal vein

Question 5

Which of the statements regarding Calot's triangle are correct?

1. Common hepatic duct forms the medial boundary of the Calot's triangle
2. Inferior surface of the right lobe of the liver forms the superior boundary of Calot's triangle
3. Right hepatic artery is usually found as a content of the Calot's triangle
4. Cystic duct and medial border of gall bladder forms the lateral border of Calot's triangle

Select the correct answer using the code given below:

Accepted Answer

1, 2 and 4

Answer

1, 2 and 3

Answer

1, 3 and 4

Answer

2, 3 and 4

Question 6

In the intraoperative image of congenital hernia repair, the structure marked by the red arrow is identified as which of the following?

Accepted Answer

Testicular vein

Answer

Femoral vein

Answer

Obturator vein

Answer

Inferior epigastric vein

Question 7

Anterior relations of third part of duodenum are all except?

Accepted Answer

Fundus of gallbladder

Answer

Jejunum

Answer

Root of mesentery

Answer

Superior mesenteric artery

Question 8

Identify the position of the appendix marked in BLACK in the given image:

Accepted Answer

Retrocecal

Answer

Pelvic

Answer

Subcecal

Answer

Preileal

Question 9

A CT scan of the abdomen reveals a mass in the pancreatic uncinate process. Which of the following structures is most likely to be compressed by this mass?

Accepted Answer

Superior mesenteric vein

Answer

Common bile duct

Answer

Portal vein

Answer

Splenic vein

Question 10

Testicular artery is a branch of -

Accepted Answer

Abdominal aorta

Answer

Common iliac artery

Answer

External iliac artery

Answer

Internal iliac artery

Abdomen — MCQs

Abdomen — MCQs

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