Digestive System Histology and Function Quiz

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| Attempts: 12 | Questions: 29 | Updated: Nov 11, 2025
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1. Which type of gland produces mucus?

Explanation

Mucous glands are specialized glands that produce and secrete mucus, which is a viscous substance that helps protect and lubricate the body's tissues. Salivary glands produce saliva, sweat glands produce sweat, and oil glands produce sebum.

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About This Quiz
Digestive System Histology and Function Quiz - Quiz

Enhance your understanding of the digestive system's histological features with this focused quiz. Assess your ability to recognize and differentiate various tissue types and structures within the digestive tract, crucial for students and professionals in Biology and Medicine.

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2. Which organ is responsible for storing and concentrating bile?

Explanation

The gall bladder is a small organ located beneath the liver, responsible for storing and concentrating bile produced by the liver. Bile is essential for the digestion of fats in the small intestine. The pancreas produces digestive enzymes and insulin, the liver detoxifies the blood and produces bile, and the spleen is involved in filtering blood and producing antibodies.

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3. Which part of the small intestine is located between the duodenum and ileum?

Explanation

The jejunum is the middle part of the small intestine, located between the duodenum and ileum. The duodenum is the first part of the small intestine, while the ileum is the last part. The colon is part of the large intestine.

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4. In which region of the digestive system is the label submucosa known as plica circularis with longitudinal and circular muscle?

Explanation

The submucosa in the jejunum is characterized by the presence of plica circularis and the muscularis externa contains both longitudinal and circular muscle layers.

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5. What is the tube that connects the throat to the stomach?

Explanation

The esophagus is the tube that carries food and liquids from the throat to the stomach. The trachea is the windpipe that carries air to and from the lungs, the small intestine is where most of the digestion and absorption of nutrients occurs, and the colon is part of the large intestine responsible for removing water from feces.

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6. What type of tissue forms the surface of the stomach mucosa?

Explanation

The stomach mucosa is composed of simple columnar epithelium and loose connective tissue that helps with secretion and protection of the stomach lining.

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7. What type of cells can be found in the villi surface of the small intestine?

Explanation

The villi surface of the small intestine contains goblet cells which secrete mucus and absorptive cells known as enterocytes. This arrangement allows for both the production of mucus for protection and the absorption of nutrients.

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8. What type of epithelium lines the mucosa of the small intestine?

Explanation

The small intestine is lined with simple columnar epithelium, which helps in secretion and absorption. Other types of epithelium do not have the same functionality or structure within the small intestine.

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9. What type of cells do the blue arrows point to in the small intestine?

Explanation

In the small intestine, blue arrows point to goblet cells, which are responsible for producing mucus to protect the lining of the intestines.

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10. What is the first part of the small intestine where Brunner's glands are located?

Explanation

The question is asking for the specific part of the small intestine where Brunner's glands are located, which is the duodenum. Brunner's glands are found in the submucosa of the duodenum and secrete mucus to protect the lining of the duodenum from the acidic chyme coming from the stomach.

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11. What changes occur during the transition between the duodenum and pylorus?

Explanation

During the transition between the duodenum and pylorus, the structural changes involve the transformation of pits into villi and the change of mucus glands in the stomach into submucosal glands. This process enhances the absorption of nutrients and secretion of mucus in the digestive system.

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12. What is the location where the esophagus meets the stomach?

Explanation

The esophageal stomach junction is the correct term used to describe the location where the esophagus meets the stomach.

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13. What is the characteristic histological feature seen in Barrett's esophagus?

Explanation

Barrett's esophagus is characterized by the presence of columnar epithelium in the esophagus instead of the normal squamous epithelium. This metaplastic change often involves goblet cells, which are indicative of intestinal metaplasia.

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14. What is shown in the image?

Explanation

The image depicts the esophagus with emphasis on the lymph node and the migration of lymphocytes, which distinguish it from the incorrect answers relating to the stomach, large intestine, and liver. Each incorrect answer showcases different aspects of other organs or conditions.

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15. Which part of the digestive system contains connective tissue papillae?

Explanation

The esophagus is the part of the digestive system that contains connective tissue papillae, allowing it to expand and contract to accommodate the passage of food.

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16. What is the primary muscle layer in the esophagus responsible for peristalsis?

Explanation

The correct answer is Esophagus - muscularis externa because this layer contains smooth muscle fibers that contract to propel food down the esophagus during swallowing. The other options do not represent the muscle layer responsible for peristalsis in the esophagus.

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17. What is the anatomical structure responsible for the production of intestinal enzymes?

Explanation

The Crypts of Lieberkuhn are small pits in the lining of the small intestine where intestinal enzymes are produced. Villi of Kerckring are finger-like projections in the small intestine that increase surface area for nutrient absorption. Peyer's patches are lymphoid tissue in the small intestine involved in immune responses. Islets of Langerhans are clusters of cells in the pancreas responsible for producing hormones like insulin.

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18. What is another term for the valve of Kerckring?

Explanation

The valve of Kerckring is also known as plica circularis and refers to the circular folds in the small intestine that increase surface area for absorption. The other options refer to different anatomical structures in the digestive system.

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19. What type of waveform is characterized by the shape of a sine curve?

Explanation

Sinusoids are waveforms characterized by the shape of a sine curve, exhibiting smooth oscillations. Triangles, squares, and sawtooth waveforms have different shapes and characteristics compared to sinusoids.

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20. What type of tissue can be observed in the small intestine?

Explanation

The small intestine is characterized by the presence of simple columnar epithelium, crypts, and villi which aid in absorption of nutrients. Lacteals within the villi play a role in absorbing dietary fats.

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21. What is the main pathological finding in a patient with acute cholecystitis presenting with right upper quadrant abdominal pain and tenderness on palpation?

Explanation

Acute cholecystitis is characterized by an inflammatory process in the gallbladder, leading to neutrophil infiltration in the mucosa and submucosa, which contributes to the patient's symptoms of right upper quadrant abdominal pain and tenderness on palpation.

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22. Which organ in the human body is responsible for pushing food down to the stomach?

Explanation

The esophagus is a muscular tube that connects the throat to the stomach and plays a crucial role in the digestion process by pushing food down to the stomach.

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23. What is the tube that carries food from the mouth to the stomach?

Explanation

The esophagus is the tube that carries food from the mouth to the stomach. It is not the trachea, which is the windpipe that carries air to the lungs. It is also not the small intestine or pancreas, which are organs involved in digestion but not responsible for carrying food from the mouth to the stomach.

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24. What is the muscular tube that connects the throat to the stomach?

Explanation

The esophagus is a muscular tube that carries food and liquids from the mouth to the stomach. The trachea is the windpipe that connects the throat to the lungs, the small intestine is part of the digestive system where most absorption of nutrients occurs, and the gallbladder stores bile produced by the liver.

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25. Which anatomical structure contains submucosal glands?

Explanation

The correct answer is Esophagus because it is the only structure listed that contains submucosal glands. Submucosal glands are found in the esophagus and play a role in secreting mucus to aid in swallowing.

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26. Which part of the body has a transition between skeletal and smooth muscles?

Explanation

The esophagus is a muscular tube connecting the throat (pharynx) with the stomach. It has a transition zone where skeletal muscles of the upper esophagus gradually transition into smooth muscles of the lower esophagus. This allows for the peristaltic movement of food from the mouth to the stomach.

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27. What is the relative oxygen concentrations in different areas?

Explanation

The correct answer mentions that oxygen concentrations vary in different zones, with less oxygen as you move further out. It is not true that oxygen levels are the same everywhere, or that closer areas have less oxygen. Likewise, areas further out generally have lower oxygen levels due to factors like distance from oxygen sources.

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28. What are the distinguishing features of Paneth cells in the small intestine?

Explanation

The description provided in the correct answer accurately describes the distinguishing features of Paneth cells in the jejunum of the small intestine. This includes their bright red coloration in crypts, the separation of mucosa and submucosa by muscularis mucosae, and the presence of lymphocytes in the lamina propria. The incorrect answers provide misleading information about the location and characteristics of Paneth cells, highlighting the importance of understanding the specific features of these cells in the small intestine.

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29. What are the distinct layers of the esophagus and their characteristics?

Explanation

The esophagus consists of distinct layers with the epithelium being non-keratinized stratified squamous, lamina propria containing fewer lymphocytes, and muscularis mucosa being thicker. The incorrect answers provide variations in layers and characteristics that do not align with the correct structure of the esophagus.

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Which type of gland produces mucus?
Which organ is responsible for storing and concentrating bile?
Which part of the small intestine is located between the duodenum and...
In which region of the digestive system is the label submucosa known...
What is the tube that connects the throat to the stomach?
What type of tissue forms the surface of the stomach mucosa?
What type of cells can be found in the villi surface of the small...
What type of epithelium lines the mucosa of the small intestine?
What type of cells do the blue arrows point to in the small intestine?
What is the first part of the small intestine where Brunner's...
What changes occur during the transition between the duodenum and...
What is the location where the esophagus meets the stomach?
What is the characteristic histological feature seen in Barrett's...
What is shown in the image?
Which part of the digestive system contains connective tissue...
What is the primary muscle layer in the esophagus responsible for...
What is the anatomical structure responsible for the production of...
What is another term for the valve of Kerckring?
What type of waveform is characterized by the shape of a sine curve?
What type of tissue can be observed in the small intestine?
What is the main pathological finding in a patient with acute...
Which organ in the human body is responsible for pushing food down to...
What is the tube that carries food from the mouth to the stomach?
What is the muscular tube that connects the throat to the stomach?
Which anatomical structure contains submucosal glands?
Which part of the body has a transition between skeletal and smooth...
What is the relative oxygen concentrations in different areas?
What are the distinguishing features of Paneth cells in the small...
What are the distinct layers of the esophagus and their...
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