When they reach the stomach, what do food particles combine with?
A. Gastric juices.
B. Mucus.
C. Bile.
D. Enzymes.
What is the liver’s main role?
A. Produce digestive enzymes.
B. Turn water into minerals for absorption.
C. Assist the stomach with digestion.
D. Remove harmful substances from the blood.
Where does the digestive process begin?
A. Stomach.
B. Esophagus.
C. Mouth.
D. Pharynx.
How long is the small intestine in an adult?
About 7 m.
B. About 70 cm.
C. About 10 m.
D. About 100 cm.
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