The Human Digestive System
- 1. What enzyme starts the digestion of carbohydrates?
A) Amylase
B) Pepsin
C) Lipase
D) Trypsin
- 2. Where does the majority of digestion occur?
A) Stomach
B) Small intestine
C) Mouth
D) Esophagus
- 3. Which organ produces bile?
A) Gallbladder
B) Pancreas
C) Stomach
D) Liver
- 4. What layer of the digestive tract is responsible for absorption?
A) Submucosa
B) Mucosa
C) Serosa
D) Muscularis
- 5. What is the last section of the large intestine called?
A) Ileum
B) Colon
C) Cecum
D) Rectum
- 6. Which structure prevents food from entering the windpipe?
A) Uvula
B) Pharynx
C) Larynx
D) Epiglottis
- 7. What is the tube called that connects the mouth to the stomach?
A) Pharynx
B) Duodenum
C) Esophagus
D) Trachea
- 8. How long is the average human small intestine?
A) About 30 feet
B) About 15 feet
C) About 5 feet
D) About 20 feet
- 9. What is the first part of the small intestine?
A) Jejunum
B) Ileum
C) Duodenum
D) Cecum
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