Digestive system

What organ breaks down food

• esophagus

• stomach

• large intestines

• lungs

What is the primary role of saliva in the digestive process?

• To break down food chemically.

• To wet food, making it easier to swallow.

• To absorb nutrients from food.

• To kill bacteria in food.

Tags

NGSS.MS-LS1-7

How does food move from the esophagus to the stomach?

• Through gravity alone.

• By voluntary muscle contractions.

• By involuntary muscle contractions that push the food down.

• It is pulled by suction from the stomach.

What is the function of hydrochloric acid in the stomach?

• To absorb water from food.

• To wet the food for easier passage.

• To chemically break down food and kill germs.

• To store undigested food.

Tags

NGSS.MS-LS1-7

What are the finger-like projections in the small intestine called, and what is their main function?

• Rectum; to store waste.

• Villi; to absorb nutrients.

• Esophagus; to transport food.

• Glands; to produce digestive enzymes.

What is the primary role of the large intestine in the digestive process?

• To chemically break down food.

• To absorb excess water and produce poop.

• To absorb all nutrients from food.

• To churn food into smaller pieces.

What organ carries es nutrients

• Large intestines

• Stomach

• Small intestines

• Esophagus