Body Systems Missing Letters
Name: ______________________ Date: ____________
Write the missing letters on the lines to finish each word.
1.
D
i
g
i
v
e
Any substance that promotes ___
2.
B
n
s
Rigid connective tissue that makes up the skeleton of vertebrates (plural)
3.
H
r
t
Organ that pumps blood around the body
4.
L
g
s
Either of two saclike respiratory organs in the chest of vertebrates (plural)
5.
K
d
n
y
Either of two bean-shaped excretory organs that filter wastes from the blood and excrete them
6.
B
a
i
That part of the central nervous system that includes all the higher nervous centers
7.
S
o
m
a
h
The region of the body of a vertebrate between the thorax and the pelvis
8.
S
e
t
o
n
The hard structure that provides a frame for the body of an animal
9.
M
u
s
e
One of the contractile organs of the body
10.
S
k
i
A natural protective body covering and site of the sense of touch
11.
B
o
o
Red liquid pumped around the body by the heart
13.
s
m
o
u
s
c
l
e
A ___ that contracts without conscious control and found in walls of internal organs such
14.
v
i
i
o
The perceptual experience of seeing
16.
f
e
m
The longest and thickest bone of the human skeleton
17.
f
b
u
a
The outer and thinner of the two bones of the human leg between the knee and ankle
18.
t
i
i
The inner and thicker of the two bones of the human leg between the knee and ankle
19.
l
m
b
r
Of or relating to or near the part of the back between the ribs and the hipbones
20.
c
i
u
l
o
r
y
Of or relating to ___
21.
a
t
r
u
Any chamber that is connected to other chambers or passageways
22.
v
e
t
r
i
c
A chamber of the heart that receives blood from an atrium and pumps it to the arteries
24.
v
a
c
a
a
Either of two large veins that return oxygen-depleted blood to the right atrium of the heart