1. Digestion is the process of breaking down food into smaller components that can be absorbed and used by the body for energy, growth, and cell repair.
2. a. Mechanical digestion
b. Chemical digestion
3. Saliva
4. b. a flap that blocks the trachea to stop food from entering the lungs.
5. c. a muscular tube that connects the mouth to the stomach.
6. a. a thick, slippery liquid that makes food easier to swallow.
7. d. waves of muscle contraction that pushes food down.
8. The majority of nutrient absorption occurs in the small intestine, where enzymes from the pancreas and bile from the liver further break down food, and nutrients are absorbed into the bloodstream through the intestinal walls.
9. a. Pancreas
b. Liver (produces bile which aids digestion)
c. Small intestine lining (produces its own digestive enzymes)
10. Villi
11. a. Absorb water and electrolytes from indigestible food matter.
b. Form and expel feces from the body.
12. e. largest organ in the body, produces bile
13. a. stores bile produced in the liver
14. f. produces enzymes that flow into the small intestine
15. d. where waste material is produced into solid form
16. c. solid wastes exit the body through this opening
17. g. a chemical that breaks up fat molecules into smaller droplets
18. b. finger-shaped structures that absorb nutrients into the blood
Parent Tip: Review the logic above to help your child master the concept of digestive system review worksheet.
