Understanding Digestion and Absorption

Which of the following organs is primarily responsible for the mechanical breakdown of food?

• Stomach

• Mouth

• Small intestine

• Large intestine

What is the main function of the stomach in the digestive process?

• Absorption of nutrients

• Production of bile

• Chemical digestion of proteins

• Storage of waste

Which organ is responsible for the absorption of most nutrients?

• Large intestine

• Stomach

• Small intestine

• Pancreas

During which stage of digestion does the breakdown of carbohydrates begin?

• Ingestion

• Digestion in the stomach

• Digestion in the mouth

• Absorption in the small intestine

What role does the pancreas play in digestion?

• It produces bile to emulsify fats.

• It secretes enzymes that aid in digestion.

• It absorbs water and electrolytes.

• It stores and concentrates bile.

Which of the following processes occurs in the large intestine?

• Absorption of amino acids

• Absorption of water

• Breakdown of proteins

• Production of insulin

What is the primary function of bile in the digestive system?

• Neutralizing stomach acid

• Breaking down carbohydrates

• Emulsifying fats

• Absorbing vitamins

Which stage of digestion involves the movement of nutrients from the digestive tract into the bloodstream?

• Ingestion

• Absorption

• Digestion

• Excretion

What is the role of villi in the small intestine?

• To secrete digestive enzymes

• To increase surface area for absorption

• To produce bile

• To store nutrients

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

• Producing bile

• Storing glucose

• Filtering toxins

• Absorbing nutrients