Lesson 4 - Your Digestive System
Name: ______________________ Date: ____________
Write the missing letters on the lines to finish each word.
1.
d
g
i
o
The process of decomposing organic matter by bacteria or by chemical action or heat
2.
s
i
a
A clear liquid secreted into the mouth by the ___ glands and mucous glands of the mouth
3.
s
m
a
An enlarged and muscular saclike organ of the alimentary canal
5.
s
m
l
i
e
s
i
The longest part of the alimentary canal
6.
f
d
What we eat to get energy and grow
7.
c
g
e
To make something different
8.
t
e
The kind and number and arrangement of ___ in a person or animal
9.
m
h
The externally visible part of the oral cavity on the face and the system of organs surrounding
10.
s
o
t
To lessen in force or effect
11.
s
l
o
A small amount of liquid food
12.
j
c
s
The liquid part that can be extracted from plant or animal tissue by squeezing or cooking (plural)
13.
g
n
d
Any of various organs that synthesize substances needed by the body and release it through ducts (plural)
14.
w
t
Any materials unused and rejected as worthless or unwanted
15.
f
r
Sweet food that grows on plants
16.
v
e
l
e
Edible seeds or roots or stems or leaves or bulbs or tubers or nonsweet fruits of any of numerous
17.
w
e
Clear liquid we drink that falls as rain
18.
e
e
r
s
Physical activity that keeps you fit