Q5. Match each of the following gastrointestinal organs with its distinctive histological feature:  

Organ Histological Feature  

1. Ileum a. Taenia coli  

2. Transverse colon b. Villi  

3. Esophagus c. Peyer's patches

  4. Duodenum d. Non-keratinized stratified squamous  epithelium

1. A

   A. 1-c, 2-a, 3-d, 4-b

2. B

   B. 1-a, 2-c, 3-d, 4-b

3. C

   C. 1-c, 2-b, 3-a, 4-d

4. D

   D. 1-d, 2-a, 3-c, 4-b

Appeared in: INI-CET EXAM -2026

Explanation

• The correct option correctly pairs each of the four gastrointestinal organs with its most distinctive histological feature.
• Ileum (1) is characterized by Peyer's patches (c), which are large aggregates of lymphoid tissue crucial for immune function in the gut.
• Transverse colon (2) is defined by Taenia coli (a), three separate longitudinal ribbons of smooth muscle on the outside of the colonic wall.
• Esophagus (3) is lined with Non-keratinized stratified squamous epithelium (d), a protective layer to withstand abrasion from food.
• Duodenum (4) features prominent Villi (b), which are finger-like projections that maximize the surface area for nutrient absorption.

Why Other Options Were Wrong

• Option B: This option incorrectly swaps the features of the ileum and the transverse colon. The ileum contains Peyer's patches, not taenia coli. The transverse colon has taenia coli, not Peyer's patches.
• Option C: This option incorrectly matches the transverse colon with villi (which are absent in the colon), the esophagus with taenia coli (found only in the colon), and the duodenum with the esophageal epithelium.
• Option D: This option incorrectly matches the ileum with the esophageal epithelium and the esophagus with Peyer's patches. The functions and structures are completely different.

Related Visual

Clinical Relevance

• Nursing practice connection: Knowing Histological features of the gastrointestinal tract helps nurses interpret findings accurately and avoid errors in routine assessment, medication administration, and patient teaching.
• Understanding the normal histology of the GI tract is fundamental for nurses to comprehend disease processes and interpret diagnostic findings.
• Pathological changes in these structures are hallmarks of specific diseases. For instance, in Celiac disease, the villi of the duodenum become blunted and atrophied, leading to malabsorption.
• In Barrett's esophagus, a complication of chronic GERD, the normal stratified squamous epithelium of the esophagus is replaced by a columnar epithelium (metaplasia), increasing the risk of adenocarcinoma.

How to Approach the Question

• First, identify the task. This is a 'Match the Following' question requiring knowledge of the microscopic anatomy of the GI tract.
• Consider each organ listed (Ileum, Colon, Esophagus, Duodenum) and recall its primary function.
• Link the function to a required structure. For example, the esophagus is a food pipe, so it needs a tough, protective lining. The small intestine absorbs nutrients, so it needs a large surface area.
• Review the list of histological features (Taenia coli, Villi, Peyer's patches, Epithelium) and match them to the functions you recalled.
• The esophagus's protective lining is the non-keratinized stratified squamous epithelium. The duodenum's large surface area is created by villi. The ileum's immune role is served by Peyer's patches. The colon's unique muscular contraction is due to taenia coli.
• Finally, select the option that contains all the correct pairings.

Concept Tested & Keywords

• Concept Tested: Histological features of the gastrointestinal tract
• Stem keywords: gastrointestinal organs, histological feature, Ileum, Transverse colon, Esophagus, Duodenum
• Lead-in keywords: Match
• Negative lead-in flag: false

Question ID

QY6WUlv80HNX-mAu1C8Sp0

Copy ID

Reference Book

E6 Histology Inderbir 11e pp. 46-48, 43-45, 30-32