11) What problem might result from damage to the epiglottis?

A) A person would no longer be able to taste food.

B) Food would be able to enter the respiratory passageway.

C) Food would not be digested properly.

D) A person would no longer be able to swallow.

12) The upper throat may be referred to as the:

A) pharynx.

B) epiglottis.

C) larynx.

D) trachea.

13) How does food move from the pharynx to the stomach?

A) Gravity alone pushes food through the trachea.

B) Gravity alone pushes food through the esophagus.

C) Peristalsis and gravity push food through the trachea.

D) Peristalsis and gravity push food through the esophagus.

14) Which is the main organic molecule that is digested by the secretions of the stomach?

A) carbohydrate

B) lipid

C) nucleic acid

D) protein

15) What is the function of the rugae, or folds in the stomach?

A) The rugae push food down toward the intestine.

B) The rugae allow the stomach to expand when food enters.

C) The rugae neutralize excess acid.

D) The rugae manufacture bile.

16) The mixture of food and digestive juices that leaves the stomach is called:

A) cud.

B) chyme.

C) pepsin.

D) trypsin.

17) Which of the following best describes the stomach’s role in absorption?

A) The stomach absorbs most nutrients.

B) The stomach absorbs mostly large proteins.

C) The stomach absorbs some drugs and alcohol but few nutrients.

D) The stomach absorbs acids.

18) Which structure regulates the passage of food from the stomach into the small intestine?

A) the pharynx

B) the epiglottis

C) the stomach submucosa

D) the pyloric sphincter

19) Why doesn’t the hydrochloric acid produced by the stomach digest its own lining cells?

A) The stomach has a dense connective tissue lining.

B) Lining cells produce a protective mucus layer.

C) The cells make chemicals that quickly neutralize all the acid.

D) The acid is specific to proteins, not cells.

20) In addition to breaking down food, what other valuable function does stomach acid perform?

A) Stomach acid kills bacteria and other pathogens in food.

B) Stomach acid activates enzymes in the small intestine.

C) Stomach acid recycles chlorine.

D) Stomach acid converts waste molecules into bile.