Digestive System Review

What is the role of saliva in digestion?

• Begins the breakdown of proteins and lubricates food.

• Begins the breakdown of carbohydrates and lubricates food.

• Neutralizes stomach acid and aids in nutrient absorption.

• Increases the temperature of food for better digestion.

What is the function of the large intestine?

• Absorbs water and forms waste.

• Produces digestive enzymes.

• Stores bile for fat digestion.

• Absorbs nutrients from food.

What is the function of gastric acid in the stomach?

• A. Absorbs nutrients from food.

• B. Breaks down food and kills harmful bacteria.

• C. Produces insulin for blood sugar regulation.

• D. Neutralizes stomach bile.

Where does carbohydrate digestion begin?

• Stomach

• Mouth

• Small intestine

• Esophagus

What organ is responsible for storing and breaking down food?

• Stomach

• Intestine

• Liver

• Pancreas

What is the difference between digestion and absorption?

• Digestion is the uptake of nutrients into the bloodstream; absorption is the breakdown of food.

• Digestion is the breakdown of food; absorption is the uptake of nutrients into the bloodstream.

• Digestion and absorption are the same processes occurring in the stomach.

• Digestion is the process of chewing food; absorption is the process of excreting waste.

What is the process by which nutrient molecules pass through the wall of your digestive system into your blood?

• Absorption

• Digestion

• Metabolism

• Excretion

What is the primary function of the small intestine?

• Nutrient absorption

• Water filtration

• Waste storage

• Hormone production

What is the main purpose of the digestive system?

• To break down food into nutrients for energy, growth, and cell repair.

• To filter waste from the blood and produce urine.

• To transport oxygen and nutrients to cells throughout the body.

• To regulate body temperature and maintain homeostasis.

What is the significance of villi in the small intestine?

• Increase surface area for nutrient absorption.

• Decrease surface area for nutrient absorption.

• Help in the digestion of proteins.

• Absorb water from the intestine.