Question 1

Secretin causes?

Accepted Answer

Answer reason: Secretin is released from S cells in the duodenum in response to acidic chyme. It inhibits gastric acid secretion and slows gastric emptying by decreasing gastric motility. Secretin also exerts inhibitory effects on small-intestinal motility. Therefore, both decreased gastric and decreased intestinal motility are correct.

Question 2

The ____ is a major site of water and nutrient absorption?

Accepted Answer

Answer reason: Most nutrient absorption occurs in the small intestine due to its large surface area from villi and microvilli and specialized transport mechanisms. The small intestine also absorbs the majority of water entering the gut along with electrolytes. The large intestine primarily fine-tunes water and electrolyte balance but handles far less nutrient absorption. The stomach and esophagus have minimal roles in absorption.

Question 3

What is a common symptom of gastroesophageal reflux disease (GERD) in infants?

Accepted Answer

Answer reason: Infant GERD commonly presents with regurgitation or vomiting after feeds due to transient lower esophageal sphincter relaxation. While classically projectile vomiting suggests hypertrophic pyloric stenosis, among the provided options, vomiting after feeds best represents reflux-related symptoms. Constipation, abdominal distension, and frequent diarrhea are not typical manifestations of GERD in infants.

Question 4

_____ is the point of maximum tenderness in acute appendicitis?

Accepted Answer

Answer reason: In acute appendicitis, maximal localized tenderness classically occurs at McBurney's point, located at the junction of the lateral and middle thirds of a line from the right anterior superior iliac spine to the umbilicus. This reflects peritoneal irritation over the inflamed appendix. Murphy's point is associated with gallbladder tenderness (Murphy sign) in cholecystitis. Lanz's point marks the base of the appendix, and Kocher's point is a neurosurgical landmark.

Question 5

When someone has Hepatitis, which organ is affected?

Accepted Answer

Answer reason: Hepatitis refers to inflammation of the liver, most commonly caused by viral infections (hepatitis A, B, C) or toxins such as alcohol or certain drugs. The liver becomes inflamed and can manifest with jaundice, right upper quadrant pain, and elevated liver enzymes. The lungs, heart, kidneys, and stomach are not the primary organs affected by hepatitis.

Question 6

Bile acid is secreted by?

Accepted Answer

Answer reason: Bile acids are synthesized from cholesterol by hepatocytes in the liver and secreted into bile canaliculi. They are stored and concentrated in the gallbladder and released into the duodenum with meals. The pancreas secretes digestive enzymes and bicarbonate, not bile acids. The kidney and intestine do not secrete bile acids (the intestine reabsorbs them via enterohepatic circulation).

Question 7

Abdominal fullness, gas, pain is term as ...?

Accepted Answer

Answer reason: Dyspepsia refers to a constellation of upper GI symptoms including postprandial fullness, bloating/gas, and epigastric pain or burning. Diarrhea denotes increased stool frequency and liquidity, not fullness and gas. A peptic ulcer is a structural lesion and is not defined by this symptom cluster. ‘Acidity’ is nonspecific heartburn; dyspepsia best matches the described features.

Question 8

Process of digestion is helped by?

Accepted Answer

Answer reason: Digestion relies on enzymes that catalyze the hydrolysis of carbohydrates, proteins, and fats into absorbable units (e.g., amylase, pepsin, lipase). Hormones such as gastrin and secretin regulate secretion and motility but do not perform the chemical breakdown. Minerals and vitamins may act as cofactors, yet the primary agents effecting digestion are enzymes.

Question 9

Bile is stored in?

Accepted Answer

Answer reason: Bile is produced by the liver but is stored and concentrated in the gallbladder between meals. When fat enters the duodenum, cholecystokinin stimulates gallbladder contraction to release bile into the bile duct. The stomach and intestines do not store bile.

Question 10

Which organ secretes HCl?

Accepted Answer

Answer reason: Hydrochloric acid is secreted by parietal (oxyntic) cells in the gastric glands of the stomach. Gastric HCl lowers luminal pH, activates pepsinogen to pepsin, and provides antimicrobial action. The liver secretes bile, not acid; the pancreas releases bicarbonate and digestive enzymes; and the kidneys regulate acid–base balance but do not secrete HCl into the GI tract.

Question 11

Diarrhoea is defined as passing stools more than?

Accepted Answer

Answer reason: Clinically, diarrhea is defined as the passage of three or more loose or watery stools in 24 hours. This threshold is used by WHO and most clinical guidelines. One to two bowel movements per day can be normal, and five per day indicates severity but is not required for the definition.

Question 12

What increases a person’s risk of developing esophageal varices?

Accepted Answer

Answer reason: Esophageal varices result from portal hypertension, most commonly due to liver cirrhosis. Chronic alcohol abuse is a leading cause of cirrhosis and thus strongly increases the risk of varices. Smoking, diabetes, and opioid abuse do not directly cause portal hypertension and are not primary risk factors for variceal formation.

Question 13

The enzyme which is present is?

Accepted Answer

Answer reason: Salivary glands secrete amylase (ptyalin), which initiates the digestion of starch in the mouth. Renin/rennin is associated with milk coagulation in the stomach of infants. Pepsin is a gastric protease, and trypsin is a pancreatic enzyme active in the small intestine. Therefore, the enzyme present in saliva is amylase.

Question 14

The stomach store the food for?

Accepted Answer

Answer reason: Normal gastric emptying for a mixed meal typically occurs within 2–3 hours, reflecting the stomach’s reservoir and grinding functions before chyme enters the duodenum. Gastric emptying half-time is about 90–120 minutes in healthy adults. High-fat or large meals can delay emptying beyond this, but the usual storage duration is approximately 2–3 hours.

Question 15

Cecum is a part of ...?

Accepted Answer

Answer reason: The cecum is the first pouch-like segment of the large intestine located in the right lower quadrant. It receives chyme from the terminal ileum through the ileocecal valve. The vermiform appendix arises from the cecum. Therefore, it is part of the large intestine.

Question 16

Which acid is found in the human stomach?

Accepted Answer

Answer reason: The stomach contains hydrochloric acid (HCl) secreted by parietal cells, creating a highly acidic environment (pH ~1–3). This acidity activates pepsinogen to pepsin and provides antimicrobial defense. Nitric acid and sulfuric acid are not produced physiologically in the stomach, and citric acid is found in citrus fruits, not as a gastric secretion.

Question 17

The first stool of a newborn is called?

Accepted Answer

Answer reason: The first bowel movement of a newborn is called meconium. It is a thick, sticky, dark green material composed of intestinal epithelial cells, lanugo, mucus, and bile accumulated in utero. It is normally passed within the first 24–48 hours after birth; delayed passage may indicate obstruction such as Hirschsprung disease or meconium ileus.

Question 18

Hepatitis B virus primarily affects which organ?

Accepted Answer

Answer reason: Hepatitis B is a hepatotropic DNA virus that infects hepatocytes, leading to inflammation of the liver. It can cause acute and chronic hepatitis, progressing to cirrhosis and hepatocellular carcinoma. The heart, kidneys, and lungs are not the primary targets of HBV infection. Therefore, the liver is the organ primarily affected.

Question 19

Jaundice is a common symptom of which disease?

Accepted Answer

Answer reason: Jaundice reflects elevated bilirubin causing yellowing of the skin and sclera. Hepatitis, an inflammation of the liver, impairs bilirubin conjugation and excretion, commonly producing jaundice. Diabetes, asthma, and migraine do not typically result in hyperbilirubinemia or jaundice.

Question 20

The tongue helps in ?

Accepted Answer

Answer reason: The tongue manipulates food during chewing, helping to form a cohesive bolus and facilitating mastication and swallowing. Absorption of nutrients primarily occurs in the small intestine, not via the tongue. Peristalsis is a coordinated muscular action of the esophagus and intestines, not a tongue function. Defecation involves the rectum and anal sphincters.

Question 21

What is The "Doctor of Stomach" called?

Accepted Answer

Answer reason: A gastroenterologist is a physician who specializes in diseases of the gastrointestinal tract, including the stomach, esophagus, intestines, liver, pancreas, and biliary system. “Stomachist” is not a recognized medical specialty. An orthopedist specializes in the musculoskeletal system (bones, joints, and related structures), not the stomach.

Question 22

The wave-like movement that pushes food forward is?

Accepted Answer

Answer reason: Peristalsis is the coordinated, wave-like contraction and relaxation of smooth muscle that propels food (a bolus) through the gastrointestinal tract, especially the esophagus and intestines. Inspiration refers to breathing in and does not move food along the GI tract. Digestion is the chemical and mechanical breakdown of food rather than the propulsive motion itself. Defecation is the elimination of feces at the end of the digestive process, not the general forward movement throughout the tract.

Question 23

The appendix is attached to which part of the large intestine?

Accepted Answer

Answer reason: The vermiform appendix is a blind-ended tube that arises from the posteromedial wall of the cecum, just inferior to the ileocecal valve. The cecum is the first part of the large intestine and serves as the point where the ileum empties into the colon. Therefore, the appendix is anatomically attached to the cecum rather than the colon in general, rectum, or ileum.

Question 24

Enema is introduced into which part of the intestine?

Accepted Answer

Answer reason: An enema is administered via the rectum, and the solution is intended to act locally in the rectum and large intestine (colon) to soften stool, stimulate peristalsis, or deliver medication. It is not introduced into the stomach or upper GI tract (e.g., duodenum), which would require oral/NG routes. Therefore, the correct location is the rectum and colon.

Question 25

Which of these is NOT a symptom of hepatitis?

Accepted Answer

Answer reason: Hepatitis causes inflammation and impaired function of the liver, commonly producing systemic symptoms (fatigue) and cholestatic findings such as bilirubin accumulation. Elevated conjugated bilirubin leads to dark urine, and jaundice causes yellowing of the sclera (eyes). High blood pressure is not a typical symptom directly associated with acute hepatitis and is more related to cardiovascular or chronic systemic conditions.

Question 26

Which part of body is Affected in typhoid ?

Accepted Answer

Answer reason: Typhoid fever (Salmonella Typhi) primarily involves the gastrointestinal tract, invading intestinal lymphoid tissue (Peyer patches) in the ileum. This leads to intestinal inflammation, ulceration, abdominal pain, and can cause complications such as GI bleeding or perforation. While systemic spread can affect other organs (e.g., hepatosplenomegaly), the main site classically affected is the intestine.

Question 27

Which of the following Disease is not related to Stomach?

Accepted Answer

Answer reason: Amnesia is a neurologic symptom involving impaired memory and is not a gastrointestinal/stomach disorder. The other options are conditions related to the digestive system or commonly associated GI complaints (constipation) or upper GI tract symptoms (dysphagia) and hepatobiliary disease within the broader GI system (cirrhosis). Therefore, amnesia is the best choice for a condition not related to the stomach/digestive system.

Question 28

Bile juice helps in digestion of?

Accepted Answer

Answer reason: Bile contains bile salts that emulsify dietary lipids into smaller droplets, increasing surface area for pancreatic lipase action. This facilitates digestion and absorption of fats in the small intestine and also supports micelle formation needed for uptake of fat-soluble vitamins (A, D, E, K). It does not directly digest proteins or carbohydrates because it has no proteolytic or amylolytic enzymes.

Question 29

The opening between esophagus and stomach is called?

Accepted Answer

Answer reason: The junction where the esophagus opens into the stomach is the cardiac orifice (also called the gastroesophageal junction/cardia). The pylorus is the distal stomach opening into the duodenum, not the esophagus. The fundus is the dome-shaped superior portion of the stomach rather than an opening, and the anus is the terminal opening of the GI tract.

Question 30

In which part of our body food gets absorbed?

Accepted Answer

Answer reason: Most nutrient absorption occurs in the small intestine due to its large surface area created by villi and microvilli. Digested carbohydrates, proteins, and fats are absorbed here into the bloodstream or lymphatic system. The large intestine mainly absorbs water and electrolytes, while the stomach primarily performs mechanical and chemical digestion with minimal absorption. The liver processes absorbed nutrients but is not the primary site of absorption.

Question 31

Which part of the digestive system absorbs most nutrients?

Accepted Answer

Answer reason: Most nutrient absorption occurs in the small intestine due to its large surface area created by villi and microvilli and its extensive capillary and lymphatic (lacteal) network. The duodenum and jejunum absorb the majority of carbohydrates, amino acids, vitamins, and minerals, while fats are absorbed into lacteals. The stomach primarily performs mechanical/chemical digestion with minimal absorption, and the large intestine mainly absorbs water and electrolytes. The oesophagus functions in transport rather than digestion or absorption.

Question 32

Villi are present in?

Accepted Answer

Answer reason: Intestinal villi are finger-like projections of the mucosa that markedly increase the absorptive surface area, and they are characteristic of the small intestine. They contain capillaries and lacteals to absorb nutrients and fats. The stomach has rugae and gastric pits (not villi), the large intestine has crypts without villi, and the pancreas is a gland rather than an absorptive mucosal surface.

Question 33

The valve between the ileum and cecum is called?

Accepted Answer

Answer reason: The ileocecal valve (ileocecal sphincter) is located at the junction of the terminal ileum and the cecum. Its key function is to regulate the flow of intestinal contents from the small intestine into the large intestine and help prevent backflow of colonic contents into the ileum. The pyloric valve is between the stomach and duodenum, the cardiac "valve" refers to the gastroesophageal junction, and the anal sphincter controls defecation.

Question 34

Which organ secretes Bile juice?

Accepted Answer

Answer reason: Bile is produced (secreted) by hepatocytes in the liver and then drains through bile canaliculi into the biliary ducts. The gallbladder does not secrete bile; it stores and concentrates bile and releases it into the duodenum when needed for fat digestion. Lungs, heart, and kidneys have no role in bile production.

Question 35

The largest gland in our body is ____?

Accepted Answer

Answer reason: The liver is the largest gland in the human body and functions as a major exocrine gland by producing and secreting bile. It also has critical endocrine/metabolic roles, including protein synthesis, detoxification, and glycogen storage. The gallbladder is not a gland (it stores and concentrates bile), and the stomach is an organ rather than the largest gland. “Endocrine gland” is not a single gland and therefore cannot be the largest gland.

Question 36

Appendix is a part of ...?

Accepted Answer

Answer reason: The vermiform appendix is attached to the cecum, which is the first part of the large intestine. It is located in the right lower quadrant near the ileocecal valve. Because it is anatomically continuous with the colon (cecum), it is classified as part of the large intestine rather than the stomach, small intestine, or liver.

Question 37

Diarrhoea is a disorder of?

Accepted Answer

Answer reason: Diarrhoea is defined as increased frequency and/or decreased consistency of stools due to altered water and electrolyte handling in the intestines, especially the small and large bowel. Most mechanisms involve increased intestinal secretion, decreased absorption, or increased motility. While patients may feel “stomach upset,” the pathophysiology producing diarrhoea occurs in the intestines rather than the lungs or kidneys.

Question 38

Appendix is a part of ?

Accepted Answer

Answer reason: The vermiform appendix is a narrow, blind-ended tube that arises from the cecum, near the ileocecal junction. Anatomically it is considered a part of the large intestine, specifically attached to the cecum rather than the ileum or duodenum. While the cecum is part of the colon/large bowel, the most precise option given is cecum.

Question 39

Appendix is a part of-?

Accepted Answer

Answer reason: The vermiform appendix is a narrow, blind-ended tube that arises from the posteromedial wall of the caecum, just below the ileocecal valve. Therefore, anatomically it is considered a part (an outpouching) of the caecum in the large intestine. The ileum and duodenum are parts of the small intestine, and while the caecum is within the colon/large bowel region, the most specific correct structure of attachment is the caecum.

Question 40

The pyloric sphincter regulates the movement of food between?

Accepted Answer

Answer reason: The pyloric sphincter is located at the distal end of the stomach (pylorus) and controls the passage of gastric contents into the first part of the small intestine, the duodenum. It regulates gastric emptying and helps prevent duodenal contents from refluxing back into the stomach. The other options describe different junctions controlled by other sphincters/valves (e.g., LES between esophagus and stomach; ileocecal valve between ileum and cecum; internal/external anal sphincters at the anal canal).

Question 41

One of the major cause for cirrhosis of liver is ?

Accepted Answer

Answer reason: Chronic alcohol abuse is one of the most common major causes of cirrhosis, leading to progressive hepatic inflammation, steatosis, alcoholic hepatitis, and ultimately fibrosis with nodular regeneration. While chronic viral hepatitis (especially hepatitis B and C) is also a major cause worldwide, alcohol is a classic leading cause and is typically the single best answer in basic nursing/medical MCQs. Smoking is not a primary cause of cirrhosis, and “drug abuse” is nonspecific compared with the established major etiologies.

Question 42

Digestion of fats is completed in?

Accepted Answer

Answer reason: Most fat digestion is completed in the small intestine, particularly the duodenum and jejunum. Bile salts emulsify dietary fats, increasing surface area for pancreatic lipase to break triglycerides into fatty acids and monoglycerides. These products form micelles and are absorbed by enterocytes, then packaged into chylomicrons. The mouth and stomach contribute minimally to fat digestion, and the large intestine is not a primary site of enzymatic fat digestion.

Question 43

Which organ produces HCL acid?

Accepted Answer

Answer reason: Hydrochloric acid (HCl) is produced by parietal (oxyntic) cells in the gastric glands of the stomach. HCl lowers gastric pH to activate pepsinogen to pepsin and provides antimicrobial defense. The intestine does not produce HCl (it is exposed to gastric acid and then neutralized), the pancreas secretes bicarbonate-rich alkaline fluid, and the liver produces bile rather than acid.

Question 44

Hydrochloric acid in stomach is secreted by?

Accepted Answer

Answer reason: Hydrochloric acid (HCl) in the stomach is produced by parietal (oxyntic) cells located primarily in the fundus and body gastric glands. These cells secrete H+ via the H+/K+ ATPase (proton pump) into the gastric lumen, creating the acidic environment needed for protein digestion and pathogen defense. Chief cells secrete pepsinogen, goblet cells secrete mucus (protective), and acinar cells are typically associated with exocrine glands like salivary glands/pancreas rather than gastric acid production.

Question 45

The ________ is common passage for bile and pancreatic juice before it opens into the duodenum?

Accepted Answer

Answer reason: The common channel where bile (from the common bile duct) and pancreatic juice (from the main pancreatic duct) unite before entering the duodenum is the hepatopancreatic duct (ampulla of Vater). This structure opens at the major duodenal papilla, regulated by the sphincter of Oddi. The hepatic duct carries bile from the liver only, and the pancreatic duct carries pancreatic secretions only, so neither is the shared passage. The common bile duct carries bile but is not the combined passage after union with the pancreatic duct.

Question 46

Bile acid is secreted by ?

Accepted Answer

Answer reason: Bile acids are synthesized from cholesterol by hepatocytes in the liver and are a major component of bile. The gallbladder stores and concentrates bile but does not produce bile acids. The pancreas secretes digestive enzymes and bicarbonate, and the kidney is not involved in bile acid secretion. The intestine participates in enterohepatic recycling of bile acids but is not the primary organ that secretes (produces) them.

Question 47

Hepatitis is a disease of ...?

Accepted Answer

Answer reason: Hepatitis literally means inflammation of the liver (hepat- = liver, -itis = inflammation). It is most commonly caused by viral infections (e.g., hepatitis A, B, C), but can also result from toxins, alcohol, or autoimmune disease. Liver inflammation can impair bilirubin processing and metabolism, leading to jaundice and elevated liver enzymes. Therefore, the correct organ involved is the liver.

Question 48

Typhoid is a disease of?

Accepted Answer

Answer reason: Typhoid fever (caused by Salmonella Typhi) is primarily an enteric infection acquired via the fecal-oral route. The organism invades the intestinal mucosa, especially Peyer’s patches in the terminal ileum, leading to intestinal inflammation and potential ulceration/bleeding or perforation. While systemic spread can affect organs like the liver, the main disease focus is the intestine.

Question 49

The small intestine has three parts. The first part is called?

Accepted Answer

Answer reason: The small intestine is anatomically divided into the duodenum, jejunum, and ileum. The duodenum is the first segment immediately distal to the stomach and is where chyme mixes with bile and pancreatic enzymes. The esophagus is part of the upper gastrointestinal tract before the stomach, and the larynx is a respiratory/airway structure, so they cannot be parts of the small intestine. Therefore, duodenum is the single best answer.

Question 50

Vomiting blood is a symptoms of?

Accepted Answer

Answer reason: Vomiting blood (hematemesis) most commonly indicates an upper gastrointestinal bleed, such as from a bleeding peptic ulcer in the stomach or duodenum. Ulcer erosion into a blood vessel can produce bright red blood or “coffee-ground” emesis. Diabetes, asthma, and fever are not typical direct causes of hematemesis, though severe coughing or other conditions can rarely lead to minor bleeding; the best match among the options is ulcer.

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