Digestive System Functions Quiz

What is the primary function of the teeth in the digestive process?

• To produce saliva

• To break down food into smaller pieces

• To absorb nutrients

• To neutralise stomach acid

Which of the following is a function of the mouth in digestion?

• Absorption of nutrients

• Production of bile

• Mechanical and chemical breakdown of food

• Water absorption

What role does stomach acid play in digestion?

• It absorbs nutrients

• It neutralises enzymes

• It breaks down proteins and kills bacteria

• It stores food

Which enzyme is activated by stomach acid to aid in protein digestion?

• Amylase

• Lipase

• Pepsin

• Lactase

What is the primary function of the small intestine in the digestive system?

• Water absorption

• Nutrient absorption

• Production of digestive enzymes

• Storage of waste

Which part of the small intestine is primarily responsible for nutrient absorption?

• Duodenum

• Jejunum

• Ileum

• Colon

What is the main function of the large intestine in digestion?

• Protein digestion

• Water absorption

• Fat emulsification

• Enzyme production

How does the large intestine contribute to maintaining the body's water balance?

• By producing bile

• By absorbing excess water from indigestible food matter

• By breaking down carbohydrates

• By secreting digestive enzymes

Which of the following is NOT a function of the mouth in digestion?

• Initiating carbohydrate digestion

• Absorbing nutrients

• Producing saliva

• Chewing food

What is the approximate pH level of stomach acid?

• 1-2

• 4-5

• 7-8

• 9-10