What is the smallest unit of a living thing that has a job to do?

• Organ

• Tissue

• Cell

• Organism

Which of the following is an example of an organ?

• Digestive system

• Heart

• Muscle tissue

• Blood cell

What is the purpose of the digestive system?

• To provide structure to the body

• To circulate blood throughout the body

• To protect the body from diseases

• To break down food into a form that can be absorbed by the blood

Which of the following is NOT a major organ of the digestive system?

• Liver

• Stomach

• Mouth

• Esophagus

What is the role of peristalsis in the digestive system?

• To protect the stomach lining

• To produce digestive enzymes

• To squeeze and move food through the digestive tract

• To absorb nutrients

Which type of digestion involves the tearing and grinding action of the teeth?

• Enzymatic digestion

• Chemical digestion

• Absorptive digestion

• Mechanical digestion

What is the function of sphincter muscles in the digestive system?

• To break down carbohydrates

• To control the passage of food

• To produce mucus

• To absorb nutrients

Which of the following is an accessory organ of the digestive system?

• Large intestine

• Pancreas

• Small intestine

• Stomach

What is the role of mucus in the digestive system?

• To absorb nutrients

• To break down food

• To produce bile

• To help food move smoothly and protect the stomach

Which of the following is an example of a body system?

• Cell

• Tissue

• Organ

• Digestive system