Question

matching: match each term with its description
1 stomach a. provides enzymes to aid in digestion
2 liver b. folds in the small intestine that absorb food
3 epiglottis c. food stays here for about four hours
4 peristalsis d. food that cannot be used is sent to this intestine
5 chewing e. process of muscles squeezing food down the esophagus
6 villi f. food provides this for the human body
7 esophagus g. first stage of the digestive system, breaks down food
8 pancreas h. provides bile to break down fat into smaller pieces
9 large i. flap that keeps from going down the wrong pipe
10 energy j. long tube that leads into the stomach
multiple choice: choose the best answer.

1. which best completes the analogy?

bile : gallbladder : gastric juices :
a. pancreas b. small intestine c. stomach d. esophagus

1. why is the epiglottis important?

a. it prevents food from going down the wrong pipe.
b. it squeezes food down the esophagus.
c. it provides bile to break down food.
d. it absorbs food into the body.

1. what mainly happens in the stomach?

a. the body absorbs nutrients.
b. enzymes break down things the body cannot use.
c. bile breaks down fat.
d. food is absorbed with villi.

1. in which part does food spend the most time?

a. mouth b. esophagus c. stomach d. small intestine

1. how does author mostly organize the passage?

a. he compares and contrasts different parts of the digestive system.
b. he explains potential problems with the digestive system and gives solutions.
c. he describes the different parts of the digestive system.
d. he describes the purpose of the digestive system.

Explanation:

1. Matching Section:

• Stomach: Food stays in the stomach for about four hours (C).
• Liver: Provides bile to break down fat into smaller pieces (H).
• Epiglottis: Flap that keeps food from going down the wrong pipe (I).
• Peristalsis: Process of muscles squeezing food down the esophagus (E).
• Chewing: First stage of the digestive system, breaks down food (G).
• Villi: Folds in the small intestine that absorb food (B).
• Esophagus: Long tube that leads into the stomach (J).
• Pancreas: Provides enzymes to aid in digestion (A).
• Large Intestine: Food that cannot be used is sent to this intestine (D).
• Energy: Food provides energy for the human body (F).

1. Multiple - Choice Section:

• Question 11: Bile is stored in the gallbladder, and gastric juices are produced in the stomach. So the answer is C. Stomach.
• Question 12: The epiglottis prevents food from going down the wrong pipe (the trachea instead of the esophagus). So the answer is A.
• Question 13: In the stomach, enzymes break down food. Option B is correct as it mentions enzymes breaking down things the body cannot use (a part of the digestive process in the stomach).
• Question 14: Food spends the most time in the small intestine (where most of the digestion and absorption occur). So the answer is D. Small Intestine.
• Question 15: The passage mainly describes the different parts of the digestive system (matching section terms and their functions, and multiple - choice questions about parts). So the answer is C.

Answer:

1. 1 - C, 2 - H, 3 - I, 4 - E, 5 - G, 6 - B, 7 - J, 8 - A, 9 - D, 10 - F
2. 11. C. Stomach
3. A. It prevents food from going down the wrong pipe
4. B. Enzymes break down things the body cannot use
5. D. Small Intestine
6. C. He describes the different parts of the digestive system