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