Lesson 4 - Your Digestive System
Name: ______________________ Date: ____________
Write the letter of the matching definition next to each term.
1. digestion
A. The externally visible part of the oral cavity on the face and the system of organs surrounding
2. saliva
B. The longest part of the alimentary canal
3. stomach
C. Edible seeds or roots or stems or leaves or bulbs or tubers or nonsweet fruits of any of numerous
4. small intestine
D. Any of various organs that synthesize substances needed by the body and release it through ducts (plural)
5. food
E. Sweet food that grows on plants
6. change
F. An enlarged and muscular saclike organ of the alimentary canal
7. teeth
G. The process of decomposing organic matter by bacteria or by chemical action or heat
8. mouth
H. Any materials unused and rejected as worthless or unwanted
9. soften
I. Physical activity that keeps you fit
10. swallow
J. The liquid part that can be extracted from plant or animal tissue by squeezing or cooking (plural)
11. juices
K. Clear liquid we drink that falls as rain
12. glands
L. To lessen in force or effect
13. waste
M. The kind and number and arrangement of ___ in a person or animal
14. fruit
N. A small amount of liquid food
15. vegetable
O. A clear liquid secreted into the mouth by the ___ glands and mucous glands of the mouth
16. water
P. To make something different
17. exercise
Q. What we eat to get energy and grow