📝 Step 6 — KMU Past Papers & Exam Learning

This section contains KMU-style past paper questions designed to strengthen conceptual understanding. Focus on understanding explanations rather than memorizing answers.

🎯 How to Study KMU Past Papers

• Read the question carefully.
• Think about the answer before looking.
• Read the explanation slowly.
• Understand the reasoning behind the correct answer.
• Revise difficult questions again.

MCQ 1

Question:
A 52-year-old man undergoes endoscopy for chronic epigastric pain. A lesion is found near the junction of the esophagus and stomach. Biopsy confirms carcinoma involving the region immediately distal to the esophageal opening. Which anatomical region is most likely involved?

Options:
Fundus
Cardia
Body
Pyloric antrum
Pyloric canal

Correct Answer:
Cardia

Explanation:
The cardia is the region of the stomach immediately distal to the esophageal opening and is commonly involved in gastroesophageal junction lesions.

MCQ 2

Question:
During surgery for bleeding gastric ulcer along the lesser curvature, the surgeon ligates an artery running along this curvature from right to left. Which artery is most likely involved?

Options:
Right gastroepiploic artery
Left gastroepiploic artery
Short gastric arteries
Right gastric artery
Posterior gastric artery

Correct Answer:
Right gastric artery

Explanation:
The right gastric artery supplies the lesser curvature and anastomoses with the left gastric artery.

MCQ 3

Question:
A patient develops infarction of the fundus of the stomach following splenic artery thrombosis. Which vessels are most directly responsible for supplying this region?

Options:
Left gastric artery
Short gastric arteries
Right gastric artery
Right gastroepiploic artery
Common hepatic artery

Correct Answer:
Short gastric arteries

Explanation:
Short gastric arteries arise from the splenic artery and supply the fundus of the stomach.

MCQ 4

Question:
A posterior gastric ulcer erodes structures forming the stomach bed. Which of the following organs is most likely to be affected first?

Options:
Liver
Pancreas
Duodenum
Gallbladder
Transverse colon

Correct Answer:
Pancreas

Explanation:
The pancreas forms a major component of the stomach bed and is commonly affected by posterior gastric ulcers.

MCQ 5

Question:
A patient with carcinoma of the pyloric region shows metastasis to lymph nodes located along the right gastroepiploic vessels. Which lymph node group is primarily involved?

Options:
Pancreaticosplenic nodes
Left gastric nodes
Pyloric nodes
Celiac nodes
Hepatic nodes

Correct Answer:
Pyloric nodes

Explanation:
Lymph from the pyloric region primarily drains into pyloric lymph nodes.

MCQ 6

Question:
Microscopic examination of gastric mucosa shows tubular glands containing large eosinophilic cells responsible for hydrochloric acid secretion. These cells are most abundant in which region?

Options:
Cardiac mucosa
Fundic mucosa
Pyloric mucosa
Duodenal mucosa
Esophageal mucosa

Correct Answer:
Fundic mucosa

Explanation:
Fundic glands contain parietal cells that secrete hydrochloric acid.

MCQ 7

Question:
A biopsy specimen from the pyloric region shows glands composed mainly of mucus-secreting cells with few parietal cells. Which type of mucosa is most consistent with this finding?

Options:
Cardiac mucosa
Fundic mucosa
Pyloric mucosa
Duodenal mucosa
Jejunal mucosa

Correct Answer:
Pyloric mucosa

Explanation:
Pyloric glands mainly contain mucus-secreting cells and fewer parietal cells.

MCQ 8

Question:
A newborn presents with projectile vomiting shortly after feeding. Imaging reveals narrowing at the distal stomach due to muscular thickening. Which developmental anomaly explains this condition?

Options:
Annular pancreas
Congenital pyloric stenosis
Esophageal atresia
Duodenal atresia
Tracheoesophageal fistula

Correct Answer:
Congenital pyloric stenosis

Explanation:
Hypertrophy of circular muscle in pylorus leads to congenital pyloric stenosis.

MCQ 9

Question:
During embryological development, rotation of the stomach results in the formation of the lesser sac. Which directional rotation primarily contributes to this process?

Options:
Rotation around transverse axis
Rotation around longitudinal axis
Rotation around sagittal axis
No rotation occurs
Bidirectional rotation

Correct Answer:
Rotation around longitudinal axis

Explanation:
Rotation around the longitudinal axis shifts the left side anteriorly and contributes to lesser sac formation.

MCQ 10

Question:
A histology slide shows mucosa with numerous gastric pits and branched glands rich in mucus-secreting cells. This pattern is most consistent with which anatomical region?

Options:
Fundus
Body
Cardia
Pyloric antrum
Duodenum

Correct Answer:
Pyloric antrum

Explanation:
The pyloric region contains deeper pits and mucus-secreting glands.

MCQ 11

Question:
During gastrectomy, the surgeon identifies the greater curvature of the stomach. Which artery typically runs along this curvature from left to right?

Options:
Right gastric artery
Left gastric artery
Right gastroepiploic artery
Left gastroepiploic artery
Short gastric artery

Correct Answer:
Left gastroepiploic artery

Explanation:
The left gastroepiploic artery runs along the greater curvature from left to right.

MCQ 12

Question:
A patient with advanced gastric carcinoma shows spread to nodes along the left gastric artery. From which region of the stomach did the tumor most likely originate?

Options:
Fundus
Body along lesser curvature
Pyloric canal
Greater curvature
Duodenal bulb

Correct Answer:
Body along lesser curvature

Explanation:
Lymph from the lesser curvature drains to nodes along the left gastric artery.

MCQ 13

Question:
Histological analysis of gastric wall demonstrates four distinct layers. Which layer is responsible for the churning movement of food unique to the stomach?

Options:
Mucosa
Submucosa
Circular muscle layer
Oblique muscle layer
Serosa

Correct Answer:
Oblique muscle layer

Explanation:
The oblique muscle layer is unique to the stomach and aids in mechanical digestion.

MCQ 14

Question:
During embryonic life, differential growth of the dorsal wall of the stomach leads to formation of which adult structure?

Options:
Lesser curvature
Greater curvature
Pyloric sphincter
Cardiac notch
Esophageal opening

Correct Answer:
Greater curvature

Explanation:
The dorsal wall grows faster, forming the greater curvature.

MCQ 15

Question:
A posterior gastric ulcer perforates into the lesser sac. Which anatomical structure forms the anterior boundary of this space?

Options:
Pancreas
Stomach
Left kidney
Transverse colon
Spleen

Correct Answer:
Stomach

Explanation:
The posterior wall of the stomach forms the anterior boundary of the lesser sac.

MCQ 16

Question:
During gastric biopsy, identification of chief cells is required. These cells are primarily responsible for secretion of which substance?

Options:
Mucus
Intrinsic factor
Pepsinogen
Hydrochloric acid
Gastrin

Correct Answer:
Pepsinogen

Explanation:
Chief cells secrete pepsinogen, which is activated into pepsin in acidic conditions.

MCQ 17

Question:
In a case of gastric carcinoma involving the fundus, lymphatic spread is expected first to which group of lymph nodes?

Options:
Pyloric nodes
Pancreaticoduodenal nodes
Pancreaticosplenic nodes
Superior mesenteric nodes
Ileocolic nodes

Correct Answer:
Pancreaticosplenic nodes

Explanation:
Fundus lymphatics drain along splenic vessels to pancreaticosplenic nodes.

MCQ 18

Question:
A developmental defect results in abnormal positioning of the stomach with reversed curvatures. Which process most likely failed during development?

Options:
Failure of elongation
Failure of septation
Failure of rotation
Failure of canalization
Failure of fusion

Correct Answer:
Failure of rotation

Explanation:
Abnormal stomach rotation results in reversed anatomical orientation.

MCQ 19

Question:
A patient develops bleeding along the greater curvature due to ulceration. Which vascular arcade provides collateral circulation in this region?

Options:
Right gastric and left gastric arteries
Left gastric and splenic arteries
Right gastroepiploic and left gastroepiploic arteries
Short gastric and left gastric arteries
Right gastric and short gastric arteries

Correct Answer:
Right gastroepiploic and left gastroepiploic arteries

Explanation:
These arteries form an arcade along the greater curvature.

MCQ 20

Question:
Histological examination reveals glands composed mainly of mucous cells with shallow pits, located near the gastroesophageal junction. Which region is represented?

Options:
Fundus
Body
Cardia
Pyloric canal
Duodenum

Correct Answer:
Cardia

Explanation:
Cardiac glands consist mainly of mucus-secreting cells near the esophageal junction.

📌 Important Exam Strategy

KMU examinations often test integrated understanding rather than isolated facts. Focus on linking anatomy, embryology, histology, and clinical concepts when reviewing questions.

✅ Revision Tip

If you can explain the reason behind the correct answer without looking at notes, your concept is strong.