RESPIRATORY
BREATHEOUT
BREATHEIN
WINDPIPE
TRACHEA
DIOXIDE
SYSTEM
OXYGEN
LUNGS
MOUTH
P
M
O
U
T
H
O
O
A
M
H
T
P
V
U
S
B
D
W
Y
N
I
O
E
W
B
C
U
F
M
U
P
I
C
O
U
M
O
C
Q
A
A
A
X
X
R
O
O
R
E
S
P
I
R
A
T
O
R
Y
O
B
L
X
B
Q
C
M
B
F
F
A
U
C
Z
Q
R
I
I
K
R
A
O
H
Z
E
U
U
E
I
U
E
T
D
P
H
E
K
X
T
I
U
W
E
B
O
A
L
E
P
E
K
A
O
Y
R
T
S
Y
E
L
T
I
M
S
T
O
E
T
I
G
A
X
N
G
U
H
L
S
Y
S
T
E
M
H
A
E
C
R
T
N
E
W
I
N
D
P
I
P
E
E
F
N
H
P
G
I
X
M
B
E
Z
I
A
A
D
O
W
O
E
S
N
I
S
Z
D
Q
A
F
Y
C
R
U
E
C
A
I
W
A
E
U
T
Z
C
T
I
A
C
T
T
E
J
C
V
U
Z
U
F
M
S
C
J
F
F
V
M
