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