Top 25 MCQs On Human Digestive System Parts And Functions

Digestion In Human 

In simple terms, digestion in humans is the body's way of processing the food we eat. It begins in the mouth, where chewing and saliva start breaking down the food. Then, the stomach and small intestine further break down the food, extracting nutrients that our body needs. The large intestine absorbs water, and the remaining waste is expelled as feces. Digestion is a vital process that ensures we get the energy and nutrients required for our body to function properly. 

Digestion In Human  

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Top- 25 MCQs 

1. What is the primary function of the digestive system?

   a. Respiration

   b. Circulation

   c. Digestion

   d. Excretion

   Answer: c. Digestion

2. Where does digestion begin in the human digestive system?

   a. Stomach

   b. Small intestine

   c. Mouth

   d. Esophagus

   Answer: c. Mouth

3. Which enzyme is responsible for breaking down carbohydrates in the mouth?

   a. Amylase

   b. Lipase

   c. Pepsin

   d. Trypsin

   Answer: a. Amylase

4. Which organ produces bile?

   a. Stomach

   b. Liver

   c. Pancreas

   d. Gallbladder

   Answer: b. Liver

5. Where is bile stored before it is released into the small intestine?

   a. Stomach

   b. Liver

   c. Pancreas

   d. Gallbladder

   Answer: d. Gallbladder

6. What is the main function of bile in digestion?

   a. Emulsify fats

   b. Break down proteins

   c. Neutralize stomach acid

   d. Absorb nutrients

   Answer: a. Emulsify fats

7. What is the primary function of the stomach in digestion?

   a. Absorption of nutrients

   b. Mechanical digestion

   c. Chemical digestion of proteins

   d. Storage of bile

   Answer: c. Chemical digestion of proteins

8. Which of the following is produced by the stomach to aid in digestion?

   a. Insulin

   b. Hydrochloric acid

   c. Bile

   d. Amylase

   Answer: b. Hydrochloric acid

9. In which part of the digestive system does most nutrient absorption occur?

   a. Stomach

   b. Small intestine

   c. Large intestine

   d. Esophagus

   Answer: b. Small intestine

10. What is the role of the pancreas in digestion?

    a. Production of bile

    b. Secretion of insulin

    c. Digestion of fats

    d. Production of red blood cells

    Answer: c. Digestion of fats

11. Which of the following is NOT a function of the small intestine?

    a. Nutrient absorption

    b. Mechanical digestion

    c. Chemical digestion

    d. Secretion of enzymes

    Answer: b. Mechanical digestion

12. What is the main function of the large intestine in digestion?

    a. Nutrient absorption

    b. Water absorption and formation of feces

    c. Digestion of proteins

    d. Production of bile

    Answer: b. Water absorption and formation of feces

13. Which enzyme is responsible for breaking down proteins in the stomach?

    a. Amylase

    b. Lipase

    c. Pepsin

    d. Trypsin

    Answer: c. Pepsin

14. What is the name of the wave-like contractions that move food through the digestive tract?

    a. Peristalsis

    b. Segmentation

    c. Absorption

    d. Churning

    Answer: a. Peristalsis

15. Where does the majority of water absorption take place in the digestive system?

    a. Stomach

    b. Small intestine

    c. Large intestine

    d. Esophagus

    Answer: c. Large intestine

16. Which of the following is a function of the saliva in the mouth?

    a. Breaking down fats

    b. Breaking down proteins

    c. Initiating the digestion of carbohydrates

    d. Absorbing nutrients

    Answer: c. Initiating the digestion of carbohydrates

17. What is the term for the semi-liquid mixture of food and digestive juices in the stomach?

    a. Bolus

    b. Chyme

    c. Feces

    d. Gastrin

    Answer: b. Chyme

18. Which of the following is an accessory organ of the digestive system?

    a. Stomach

    b. Small intestine

    c. Liver

    d. Pancreas

    Answer: c. Liver

19. What is the primary function of the esophagus in digestion?

    a. Digestion of fats

    b. Absorption of nutrients

    c. Transport of food to the stomach

    d. Production of bile

    Answer: c. Transport of food to the stomach

20. Which of the following is a function of the mucus lining in the stomach?

    a. Protection of the stomach lining

    b. Digestion of carbohydrates

    c. Absorption of nutrients

    d. Production of bile

    Answer: a. Protection of the stomach lining

21. What is the role of the appendix in the human digestive system?

    a. Digestion of fats

    b. Storage of bile

    c. Immune function

    d. Absorption of nutrients

    Answer: c. Immune function

22. Which of the following is a symptom of indigestion?

    a. Excessive thirst

    b. Heartburn

    c. Increased appetite

    d. Weight loss

    Answer: b. Heartburn

23. What is the name of the ring-like muscle that controls the passage of food from the stomach to the small intestine?

    a. Sphincter

    b. Villi

    c. Peristalsis

    d. Rugae

    Answer: a. Sphincter

24. Which hormone stimulates the release of bile from the gallbladder?

    a. Insulin

    b. Glucagon

    c. Cholecystokinin 

    d. Ghrelin

    Answer: c. Cholecystokinin 

25. What is the term for the process of breaking down complex food molecules into simpler forms that can be absorbed by the body?

    a. Respiration

    b. Digestion

    c. Assimilation

    d. Circulation

    Answer: b. Digestion   

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