1 What is the function of the villi in the small intestine? A To secrete digestive juices B To increase surface area for absorption C To store nutrients D To produce bile
2 What is the function of the esophagus? A To absorb nutrients B To churn food with acids C To carry food from the mouth to the stomach D To store bile
3 What is the function of the pyloric sphincter? A To control the flow of food from the stomach to the small intestine B To control the flow of bile C To prevent food from entering the esophagus D To regulate breathing
4 What is the function of the duodenum? A To absorb water B To receive digestive juices from the liver and pancreas C To store bile D To eliminate waste
6 Which part of the digestive system is also known as the colon? A Small intestine B Large intestine C Stomach D Rectum
7 Which organ is responsible for the final stage of digestion and absorption of nutrients? A Stomach B Large intestine C Small intestine D Mouth
8 What is the role of hydrochloric acid in the stomach? A To kill bacteria and help digest proteins B To absorb fats C To produce bile D To neutralize acids
9 Which part of the digestive system is the longest? A Esophagus B Stomach C Small intestine D Large intestine
10 What is the function of bile salts? A To digest carbohydrates B To emulsify fats C To digest proteins D To absorb water
11 What is the function of the rectum? A To absorb nutrients B To store feces before elimination C To produce digestive enzymes D To absorb water
12 What is the name of the process where food is broken down into simpler substances? A Absorption B Egestion C Digestion D Excretion
13 What is the function of the large intestine? A To absorb nutrients B To absorb water and minerals C To produce digestive enzymes D To break down fats
14 Which enzyme is found in gastric juice and helps digest proteins? A Amylase B Lipase C Pepsin D Trypsin
15 Which organ produces bile that helps in the digestion of fats? A Pancreas B Gallbladder C Liver D Stomach
16 Which organ is responsible for the production of red blood cells in adults? A Liver B Pancreas C Bone marrow D Stomach
17 What is the function of the tongue during digestion? A To produce saliva B To taste and move food during chewing C To absorb nutrients D To secrete digestive enzymes
18 What is the role of the stomach in digestion? A To absorb water B To grind food and mix it with digestive juices C To produce bile D To store undigested food
19 What is the name of the opening through which feces leave the body? A Rectum B Anus C Colon D Cecum
20 Which part of the digestive system is responsible for grinding food into a paste? A Mouth B Stomach C Small intestine D Esophagus
21 What is the function of the salivary glands? A To produce bile B To produce saliva containing amylase C To store food D To absorb nutrients
23 Which organ stores bile produced by the liver? A Pancreas B Gallbladder C Small intestine D Rectum
24 Which organ is involved in both digestion and excretion? A Liver B Pancreas C Kidney D Gallbladder
25 What is the name of the muscular tube that connects the throat to the stomach? A Trachea B Esophagus C Pharynx D Larynx