Digestive System Quiz

What are the two main roles of the digestive system?

• Absorption and excretion

• Digestion and absorption

• Circulation and excretion

• Digestion and circulation

How do teeth contribute to digestion?

• By neutralizing stomach acid

• By releasing enzymes

• By increasing food surface area

• By absorbing nutrients

What is the role of saliva in the mouth?

• To neutralize stomach acid

• To absorb nutrients

• To break down proteins

• To wet food and begin carbohydrate digestion

What enzyme is produced in the stomach to break down proteins?

• Lipase

• Pepsin

• Amylase

• Trypsin

What is the function of hydrochloric acid in the stomach?

• To kill bacteria and provide the right pH for enzymes

• To digest carbohydrates

• To absorb nutrients

• To emulsify fats

What is the primary role of the small intestine?

• To produce saliva

• To store bile

• To digest and absorb nutrients

• To absorb water

What is the role of bile in digestion?

• To break down carbohydrates

• To neutralize enzymes

• To digest proteins

• To emulsify fats

What feature of the small intestine increases its surface area for absorption?

• Villi and microvilli

• Hydrochloric acid

• Muscular walls

• Salivary glands

What is the main function of the large intestine?

• To produce bile

• To absorb excess water

• To digest proteins

• To break down carbohydrates

Where are feces stored before excretion?

• In the rectum

• In the stomach

• In the esophagus

• In the small intestine