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