3. When is food useful to the body? When it reaches the
A. Blood
C. Intestine
B. Body Cells
D. Stomach
4. Which moves the food from the esophagus to the stomach?
A. Fluid
C. Peristalsis
B. Digestion
D. Swallowing
5. What substance is secreted by the stomach help digest food?
A. Acid B. Carbon Dioxide C. Gastric Juice D. Pepsin​