Abdomen Practice Questions

Q: Which of the following structures is NOT a boundary of the hepatocystic triangle?

Gall bladder. ***Gall bladder*** - The hepatocystic triangle (also known as Calot's triangle in classical terminology, though the two differ in their third boundary) is a vital anatomical landmark used during **cholecystectomy** to identify the cystic artery. - The boundaries of the hepatocystic triangle are: **cystic duct** (inferiorly), **common hepatic duct** (medially), and **inferior surface of the liver** (superiorly). - The **gall bladder** lies lateral to the triangle and is **not a boundary** of the hepatocystic triangle itself. *Common hepatic duct* - The common hepatic duct forms the **medial boundary** of the hepatocystic triangle. - It is formed by the union of the right and left hepatic ducts. *Cystic duct* - The cystic duct forms the **inferior (or lateral) boundary** of the hepatocystic triangle. - It connects the gall bladder to the common bile duct. *Inferior surface of the liver* - The inferior surface of the liver (specifically the visceral surface) forms the **superior boundary** of the hepatocystic triangle. - This anatomical relationship is crucial during surgical dissection.

Q: The gallstone pain is referred to the shoulder through which of the following nerves?

C3-C5. ***C3-C5*** - Pain from the **gallbladder** (and diaphragm) is referred to the shoulder via the **phrenic nerve**, which originates from spinal segments **C3-C5**. [1] - This is an example of **referred pain**, where visceral pain is perceived at a distant somatic site due to shared neural pathways. [1] *C2-C8* - This range of spinal nerves is too broad and includes cervical segments that primarily innervate the neck and upper limbs, not specifically the diaphragmatic or biliary pathways for shoulder referral from gallstones. [3] - While C2-C4 contribute to sensation in the neck and upper shoulder, they are not the primary afferent pathway for visceral pain from the gallbladder referred to the shoulder. *T1-T4* - These thoracic segments primarily contribute to the innervation of the upper chest and inner arm. - Pain referred through these segments typically originates from the **heart** or **lungs**, not the gallbladder, and is usually felt in the chest or arm. *T8-T12* - These thoracic segments innervate the abdominal wall and are involved in pain sensation from lower abdominal organs. [2] - Pain referred through these segments would typically be perceived in the abdomen or flanks, not the shoulder. [3]

Q: The squamo-columnar junction is normally located at

Distal 2-3 cms of esophagus. ***Distal 2-3 cms of esophagus*** - The **squamo-columnar junction** (SCJ), or Z-line, is the visible endoscopic landmark where the pale, shiny stratified squamous epithelium of the esophagus meets the red, velvety columnar epithelium of the stomach. - In normal anatomy, this junction is typically located within the **distal 2-3 cm** of the esophagus, just above the anatomical gastroesophageal junction (GEJ). *Proximal 2-3 cms of stomach* - This location would imply the SCJ is in the stomach, which is incorrect; the stomach lining is entirely composed of **columnar epithelium**. - While there is a transition at the gastroesophageal junction, the term squamo-columnar junction specifically refers to the meeting point of esophageal squamous and gastric-type columnar epithelia. *In esophagus more than 3cms proximal to GEJ* - If the SCJ is located more than 3 cm proximal to the GEJ, it suggests **Barrett's esophagus**, where gastric-type columnar epithelium has replaced the normal esophageal squamous lining due to metaplasia [1]. - This is an abnormal finding and not the physiological location of the squamo-columnar junction. *None of the options* - This option is incorrect because the distal 2-3 cm of the esophagus accurately describes the normal location of the squamo-columnar junction. - The SCJ's position is a critical clinical landmark for identifying conditions like Barrett's esophagus or hiatal hernia [1].

Q: How many layers does the greater omentum have?

4 layers. ***4 layers*** - The greater omentum is formed by the fusion of two double-layered peritoneal folds, effectively creating a structure composed of **four layers** of peritoneum. - These layers originate from the dorsal mesentery and descend from the greater curvature of the stomach, folding back to ascend to the transverse colon. *1 layer* - A single peritoneal layer is not sufficient to form the complex structure of the greater omentum, which is derived from embryonic folds. - Peritoneal structures like mesenteries and omenta are typically formed from at least two layers of peritoneum. *2 layers* - While composed of peritoneal layers, describing the greater omentum as simply two layers overlooks its developmental origin as a fusion of two double-layered structures. - A simple two-layered structure would be characteristic of the ventral or dorsal mesentery before its complex folding and fusion. *3 layers* - There is no anatomical or embryological basis for the greater omentum to be composed of exactly three layers of peritoneum. - Its formation explicitly involves the apposition of two double-layered folds.

Q: Which artery primarily supplies the stomach?

Left gastric artery. ***Left gastric artery*** - The **left gastric artery** is a direct branch of the **celiac trunk** that supplies the lesser curvature of the stomach and the abdominal esophagus. - It forms an anastomosis with the right gastric artery, creating a vascular arc along the lesser curvature. *Coeliac trunk* - The **coeliac trunk** is the main artery that gives rise to several branches, including the left gastric, common hepatic, and splenic arteries, which collectively supply the foregut [1]. - While it's the origin of the stomach's blood supply, it's not the primary direct supplier to the stomach itself as it branches into specific gastric arteries [1]. *Gastroduodenal artery* - The **gastroduodenal artery** is a branch of the common hepatic artery and primarily supplies the pylorus of the stomach, the duodenum, and the head of the pancreas. - Its main roles are in supplying these regions and it contributes to a lesser extent to the stomach's overall blood supply compared to the left gastric artery. *Common hepatic artery* - The **common hepatic artery** is another main branch of the celiac trunk that supplies the liver, gallbladder, and parts of the stomach and duodenum. - It gives rise to the gastroduodenal and right gastric arteries, but it does not directly "primarily" supply the bulk of the stomach.

Q: The majority of gastric lymph ultimately drains to which of the following?

Coeliac nodes. The majority of gastric lymph ultimately drains to which of the following? ***Coeliac nodes*** - The coeliac nodes are the **final common pathway** for most lymphatic drainage from the stomach, serving as a regional lymph node basin [1]. - Lymph from the various perigastric nodal groups eventually funnels into the coeliac nodes, located around the **coeliac artery** [1]. *Pyloric nodes* - **Pyloric nodes** (suprapyloric, infrapyloric, and retropyloric) drain lymph from the **antrum and pylorus** of the stomach [1]. - However, these nodes ultimately drain into the coeliac nodes, not directly receiving the majority of gastric lymph [1]. *Short gastric vessel nodal group* - This group of nodes drains the **fundus** and **upper body** of the stomach along the short gastric vessels [1]. - Like other perigastric nodes, their lymphatic drainage ultimately proceeds to the more central coeliac nodes [1]. *Right gastroepiploic nodes* - The **right gastroepiploic nodes** primarily drain lymph from the **greater curvature** of the stomach [1]. - This stream of lymph, too, eventually converges towards the coeliac nodes as its next major station [1].

Q: In posterior perforation of stomach, collection of gastric contents occurs in which pouch?

Omental bursa. ***Omental bursa*** - A **posterior perforation of the stomach** allows gastric contents to drain directly into the **omental bursa (lesser sac)** due to its anatomical proximity to the posterior stomach wall. - The omental bursa is a potential space located posterior to the stomach and lesser omentum, forming a common site for accumulation of fluid or contents from posterior gastric perforations [1]. *Greater sac* - The **greater sac** is the main and larger part of the peritoneal cavity; a posterior gastric perforation would prevent direct spillage into this space. - Only an anterior perforation of the stomach would typically lead to gastric contents entering the greater sac. *Right subphrenic space* - The **right subphrenic space** is located between the diaphragm and the liver, and **gastric perforations** do not usually drain into this space directly [1]. - Collection here is more common with perforations of the **duodenum** or **liver abscesses** rupturing superiorly. *Right subhepatic and hepatorenal spaces [pouch of Morrison]* - The **right subhepatic space** and **pouch of Morrison** (hepatorenal recess) are located inferior to the liver, between the liver and right kidney. - Contents from a posterior gastric perforation would not directly accumulate here due to the anatomical barrier of the stomach and lesser omentum, and the greater omentum.

Q: Which segment of the liver receives blood supply from both the right and left hepatic arteries and portal veins, and drains directly into the inferior vena cava?

Segment I (Caudate Lobe). ***Segment I (Caudate Lobe)*** - The **caudate lobe** is unique in its blood supply and venous drainage. It receives arterial supply from both the right and left hepatic arteries and venous drainage from both the right and left portal veins [1]. - Its venous drainage is also distinct, emptying directly into the **inferior vena cava (IVC)** via several small, independent hepatic veins, rather than through the main right, middle, or left hepatic veins like the other segments [1]. *Segment II* - This segment is part of the **left hepatic lobe** and is supplied by branches of the left hepatic artery and left portal vein [1]. - Its venous drainage primarily flows into the **left hepatic vein**. *Segment IV* - This segment, also known as the **quadrate lobe**, is part of the functional left lobe, though anatomically it's often considered part of the right lobe [1]. - It receives blood primarily from the **left portal vein** and drains into the **middle hepatic vein** [1]. *Segment III* - This segment is part of the **left hepatic lobe** and is located to the left of the falciform ligament [1]. - It receives arterial supply from the **left hepatic artery** and venous supply from the **left portal vein**, draining ultimately into the **left hepatic vein**.

Q: To which segment of the liver is the gallbladder related?

Segment IV. ***Segment IV*** - The **gallbladder** is anatomically positioned in the **fossa of the gallbladder**, which lies in relation to the **quadrate lobe** of the liver [1]. - The **quadrate lobe** corresponds to **Segment IV** of the Couinaud classification system [1]. *Segment I* - **Segment I** is the **caudate lobe**, which is located posterior to the porta hepatis and is functionally distinct, receiving blood supply from both the right and left hepatic arteries [2]. - It is superior to the gallbladder and not directly related to its fossa [1]. *Segment II* - **Segment II** is located in the **left lateral segment** of the liver, superior and to the left of the falciform ligament [3]. - This segment is far from the anatomical position of the gallbladder. *Segment III* - **Segment III** is also part of the **left lateral segment**, situated anteroinferiorly to Segment II [3]. - Like Segment II, it is anatomically distant from the gallbladder fossa.

Question 1

Which of the following structures is NOT a boundary of the hepatocystic triangle?

Accepted Answer

Gall bladder

Answer

Common hepatic duct.

Answer

Cystic duct.

Answer

Inferior surface of the liver.

Question 2

The gallstone pain is referred to the shoulder through which of the following nerves?

Accepted Answer

C3-C5

Answer

C2-C8

Answer

T1-T4

Answer

T8-T12

Question 3

The squamo-columnar junction is normally located at

Accepted Answer

Distal 2-3 cms of esophagus

Answer

In esophagus more than 3cms proximal to GEJ

Answer

Proximal 2-3 cms of stomach

Answer

None of the options

Question 4

Which of the following statements about the caudate lobe of the liver is true?

Accepted Answer

It receives blood supply from both right and left hepatic arteries

Answer

It is Segment II of the liver

Answer

It is situated on the anterior surface of liver

Answer

It lies between the aorta and ligamentum venosum

Question 5

How many layers does the greater omentum have?

Accepted Answer

4 layers

Answer

1 layer

Answer

2 layers

Answer

3 layers

Question 6

Which artery primarily supplies the stomach?

Accepted Answer

Left gastric artery

Answer

Gastroduodenal artery

Answer

Coeliac trunk

Answer

Common hepatic artery

Question 7

The majority of gastric lymph ultimately drains to which of the following?

Accepted Answer

Coeliac nodes

Answer

Pyloric nodes

Answer

Short gastric vessel nodal group

Answer

Right gastroepiploic nodes

Question 8

In posterior perforation of stomach, collection of gastric contents occurs in which pouch?

Accepted Answer

Omental bursa

Answer

Greater sac

Answer

Right subphrenic space

Answer

Right subhepatic and hepatorenal spaces [pouch of Morrison]

Question 9

Which segment of the liver receives blood supply from both the right and left hepatic arteries and portal veins, and drains directly into the inferior vena cava?

Accepted Answer

Segment I (Caudate Lobe)

Answer

Segment II

Answer

Segment IV

Answer

Segment III

Question 10

To which segment of the liver is the gallbladder related?

Accepted Answer

Segment IV

Answer

Segment I

Answer

Segment II

Answer

Segment III

Abdomen — MCQs

Abdomen — MCQs

On this page

Practice by Chapter

Want unlimited practice?