Digestive System Quiz

What does digestion refer to in the human body?

• The process of eliminating waste from the body

• The mechanical and chemical breakdown of foods and absorption of nutrients

• The circulation of blood through the digestive tract

• The absorption of water only

What is the role of mechanical digestion in the digestive system?

• It changes the chemical composition of food

• It absorbs nutrients into the bloodstream

• It breaks down large pieces of food into smaller ones without changing their chemical composition

• It synthesizes new food molecules

How does chemical digestion contribute to the digestive process?

• By physically making food particles smaller

• By breaking down nutrient molecules into smaller chemicals through chemical bonds

• By moving food through the digestive tract

• By cooling down the food to aid digestion

Which of the following best describes the components of the digestive system?

• It includes only the stomach and intestines

• It consists of the alimentary canal from mouth to anus, including several accessory organs

• It is made up solely of the liver and pancreas

• It functions without any secretions or accessory organs

What is the primary function of the salivary glands in the digestive system?

• Produces bile to emulsify fats

• Secretes enzymes that initiate the breakdown of carbohydrates

• Absorbs water from digested food

• Mixes food with bile and pancreatic juice

Which organ connects the mouth with the esophagus?

• Stomach

• Pharynx

• Small intestine

• Liver

What is the role of the stomach in the digestive process?

• Produces bile

• Secretes acid and enzymes, mixes food with secretions to begin enzymatic digestion of proteins

• Concentrates bile and releases it into the small intestine

• Regulates elimination of feces

Where does the majority of nutrient absorption occur in the digestive system?

• Esophagus

• Large intestine

• Small intestine

• Stomach

What is the function of the liver in the digestive system?

• Secretes enzymes that break down carbohydrates

• Absorbs water and electrolytes

• Produces bile, which emulsifies fat

• Regulates elimination of feces

What is the primary function of the alimentary canal?

• To transport oxygen to different parts of the body

• To serve as a passageway for food between the mouth and anus

• To filter blood

• To absorb sunlight