Digestive System MCQs
Understanding how the human body processes food is a fundamental topic in biology and a frequent area for questions in competitive exams like NEET UG, SSC, paramedical course exam and medical entrance tests. This first part of our Digestive System Quiz series focuses on the core anatomy of the digestive tract.
In this set of 40 Multiple Choice Questions (MCQs), we cover essential topics including the length of the alimentary canal, human teeth types and formulas (adult and child), the structure of the stomach, and the initial stages of digestion. Each question is paired with a clear explanation to help you master the concepts quickly.
Read Also: Human Digestive System Quiz - Part 2Ready to see how much you know about your body's "engine"? Let's dive into the quiz below! 👇
Start Quizzes [MCQs]
0%
Q. 1: Which of the following biological system that break down foods, extract nutrients and eliminate waste from body, is called ?
A) Excretory System
B) Respiratory System
C) Digestive System
D) Reproductive System
EXPLANATION: The biological system that break down foods, extract nutrients and eliminate waste from body, is called digestive System.
Q. 2: Length of the alimentary canal ?
A) 2 - 3 meters
B) 4 - 6 meters
C) 6 - 9 meters
D) 12 meters
EXPLANATION: Length of the alimentary canal is about 6 - 9 meters.
Q. 3: Which of the following process that break down food into smaller, simple molecules that can be absorbed and utilized for energy, growth, and other physiological functions ?
A) Inspiration
B) Glycolysis
C) Digestion
D) All of these
EXPLANATION: Digestion is the process that break down food into smaller, simple molecules that can be absorbed and utilized for energy, growth, and other physiological functions.
Q. 4: How many types of digestion in human ?
A) 1
B) 2
C) 3
D) 4
EXPLANATION: Two types of digestion found in human- Mechanical Digestion and Chemical Digestion.
Q. 5: Where is done mechanical digestion in human ?
A) In Pancreas
B) In Liver
C) In Gallbladder
D) In Mouth and Stomach
EXPLANATION: The mechanical digestion in human is done in mouth and stomach by chewing, churn and mix through muscular contraction.
Q. 6: How many steps of digestion in human ?
A) 2
B) 3
C) 5
D) 4
EXPLANATION: Five steps of digestion found in human: Ingestion, Digestion, Absorption, Assimilation, and Elimination.
Q. 7: Which of the following properties is human tooth ?
A) Thecodont
B) Diphyodont
C) Hetrodont
D) All of these
EXPLANATION: All of these properties are human tooth.
Q. 8: How many types of tooth found in human ?
A) 3
B) 4
C) 5
D) 6
EXPLANATION: Four types of tooth found in human: Incisors (8), Canine (4), Premolars (8), Molars (12) and total of numbers = 32.
Q. 9: Teeth formula of the adult human ?
A) 2143/2143
B) 2123/2123
C) 2102/2102
D) 2122/2122
EXPLANATION: Teeth formula of the adult human is 2123/2123.
Q. 10: Teeth formula of the child ?
A) 2143/2143
B) 2123/2123
C) 2102/2102
D) 2122/2122
EXPLANATION: Teeth formula of the child is 2102/2102.
Q. 11: How many numbers of human teeth erupted once in life ?
A) 32
B) 12
C) 20
D) 4
EXPLANATION: Numbers of 12 human teeth erupted once in life: 8 Premolars and 4 molars.
Q. 12: How many numbers of human teeth erupted twice in life ?
A) 32
B) 12
C) 20
D) 4
EXPLANATION: Numbers of 20 human teeth erupted once in life: 8 Incisors, 4 Canine and 8 molars.
Q. 13: How many parts of human tooth ?
A) 3
B) 4
C) 5
D) 6
EXPLANATION: Three parts of human tooth: Crown, Neck and Root.
Q. 14: How many layers found in human tooth ?
A) 1
B) 3
C) 2
D) 4
EXPLANATION: Four layers found in human tooth: Enamel, Dentin, Pulp, and Cementum.
Q. 15: Which of the following teeth's layer consists blood vessels, nerves and providing pain and temperature sensation ?
A) Enamel
B) Dentin
C) Pulp
D) Cementum
EXPLANATION: Pulp, teeth's layer consists blood vessels, nerves and providing pain and temperature sensation.
Q. 16: Which of the following muscular structure connecting the tongue to the oral cavity ?
A) Villi
B) Crypts of Lieberkuhn
C) Frenulum
D) Muscularis externa
EXPLANATION: Frenulum is the muscular structure connecting the tongue to the oral cavity.
Q. 17: Which of the following options is correct about Oesophagus ?
A) Extending hypopharynx to stomach
B) About 25 cm/10 inches in length
C) About 1.5-2 cm in width
D) All of these
EXPLANATION: All of these options is correct about Oesophagus.
Q. 18: How many walls founds in human alimentary canal ?
A) 3
B) 4
C) 5
D) 6
EXPLANATION: Number of four walls found in human alimentary canal: Mucosa, Submucosa, Muscularis externa and Serosa.
Q. 19: Where found "Crypts of Lieberkuhn" ?
A) Tongue
B) Stomach
C) Base of villi in intestine
D) Duodenum
EXPLANATION: "Crypts of Lieberkuhn" found in between the base of villi in intestine.
Q. 20: Which of the following cells secrets mucus in alimentary canal ?
A) Peptic cells
B) Goblet cells
C) Oxyntic cells
D) Epithelial cells
EXPLANATION: Goblet cells (found in mucosa layer) secrets mucus in alimentary canal that protect to HCL injury and provide lubrication.
Q. 21: Which of the following cells secrets HCL and intrinsic factor in the stomach ?
A) Peptic cells
B) Goblet cells
C) Oxyntic cells
D) Epithelial cells
EXPLANATION: Oxyntic cells (parietal cell) are the epithelial cells which are located in gastric glands found in the lining of the fundus and in the body of the stomach. They secrete hydrochloric acid and intrinsic factor.
Q. 22: Which of the following options is correct about Duodenum ?
A) Firest, shortest part, 'c' shaped
B) Length= 25-30 cm/10-12 inches
C) Receive bile and pancreatic enzymes
D) All of these
EXPLANATION: All of these options is correct about Duodenum.
Q. 23: How many parts founds in human small intestine ?
A) 3
B) 4
C) 5
D) 6
EXPLANATION: Number of three parts found in human small intestine: Duodenum, Jejunum, and Ileum.
Q. 24: What is the muscular movement/motility of the esophagus, stomach, and intestines called ?
A) Peristalsis
B) Palpitate
C) Flutter
D) All of these
EXPLANATION: Peristalsis is a series of wave-like muscle contractions that move food through the digestive tract.
Q. 25: Which of the following options is incorrect about Jejunum ?
A) Length= About 2.5 m (8 feets)
B) First part, Nutrient absorption
C) Covered with villi
D) Ileocecal valve= between jejunum - ileum
EXPLANATION: Jejunum is the second part of small intestine that absorption the nutrients into blood stream.
Q. 26: Which of the following options is correct about Ileum ?
A) Length= 3.5-4.5 m (11-15 feets)
B) Last part, Absorbing vitamins/nutrients
C) Ileocecal valve= between ileum-cecum
D) All of these
EXPLANATION: All of these options is correct about Ileum.
Q. 27: Where are 'Peyer's patches' found ?
A) Stomach
B) Ileum
C) Duodenum
D) Large intestine
EXPLANATION: 'Peyer's patches' (Lymphoid tissue) found in Ilium.
Q. 28: Which of the following options is correct about large intestine ?
A) Length= About 1.5 m (5 feets)
B) Water/Electrolytes absorption
C) Bacterial fermentation
D) All of these
EXPLANATION: All of these options is correct about large intestine.
Q. 29: How many parts of human's large intestine ?
A) 3
B) 6
C) 5
D) 4
EXPLANATION: Six parts of human's large intestine: Cecum, Ascending colon, Transverse/Horizontal colon, Descending colon, Sigmoid colon, and Rectum.
Q. 30: How many parts of human's stomach ?
A) 3
B) 6
C) 5
D) 4
EXPLANATION: Four parts of human's stomach: Cardia, Fundus, Body, and Pylorus.
Q. 31: Which of the following is the correct weight of the stomach ?
A) About 75-90 grams
B) About 200-250 grams
C) About 150-200 grams
D) About 350-400 grams
EXPLANATION: Weight of the stomach = About 150-200 grams.
Q. 32: Capasity of stomach is ?
A) About 4-5 Liters
B) About 1-3 Liters
C) About 250-500 mL
D) About 400-600 mL
EXPLANATION: Capasity of stomach is about 1-3 Liters in volume.
Q. 33: Which of the following options is inncorrect about stomach ?
A) 2-3 Hours storage of food
B) Pepsin Enzyme Production
C) Drugs and alcohol absorption
D) HCL production= Goblet cell
EXPLANATION: Oxyntic cells (parietal cell) are located in gastric glands found in the lining of the fundus and in the body of the stomach. They secrete HCL and intrinsic factor.
Q. 34: Where is gastro-esophageal sphincter located ?
A) Between esophagus and stomach
B) Between esophagus and pharynx
C) Between stomach and duodenum
D) None of these
EXPLANATION: The gastro-esophageal sphincter located between esophagus and stomach.
Q. 35: Where is pyloric sphincter located ?
A) Between esophagus and stomach
B) Between esophagus and pharynx
C) Between stomach and duodenum
D) None of these
EXPLANATION: The pyloric sphincter located between stomach and duodenum.
Q. 36: Which of the following options is incorrect about Liver ?
A) Largest exocrine gland
B) Weight= 1.2-1.5 kg
C) Three hepatic lobes found
D) Secrets Bile, Maintain Detoxification
EXPLANATION: The liver consists two hepatic lobes: Right large lobe and left small lobe.
Q. 37: Which of the following options is correct about blood supply to the live ?
A) Hepatic artery= Oxygenated blood
B) Portal vain= Carry blood from D.S.
C) Both
D) None of these
EXPLANATION: Hepatic artery provide oxygenated blood to the live and portal vain carries nutrients rich blood from digestive system.
Q. 38: Where is 'sphincter of oddi' located ?
A) Between esophagus and stomach
B) Between common hepato-pancreate duct and duodenum
C) Between stomach and duodenum
D) None of these
EXPLANATION: The sphincter of oddi located between stomach and duodenum.
Q. 39: Which type of gland is Pancreas ?
A) Endocrine
B) Heterocrine / Mixed
C) Exocrine
D) Mixed / Homocrine
EXPLANATION: Pancreas is heterocrine or mixed type gland.
Q. 40: How many parts of pancreas is exocrine ?
A) 50%
B) 75%
C) 90%
D) 99%
EXPLANATION: 99% parts of pancreas is exocrine that secrets enzymes and 1% part of pancreas is endocrine that secrets hormones.
REPORT CARD
ATTEMPTED QUESTIONS: 0CORRECT ANSWERS: 0
WRONG ANSWERS: 0
PRACTICE REGULARLY!