CONTRACTIONS
ENDOMETRIUM
TRIMESTER
DILATES
EMBRYO
FOETUS
UTERUS
ZYGOTE
LABOUR
BIRTH
G
S
O
I
U
P
T
O
Z
W
G
E
T
E
C
V
F
S
N
C
Y
B
P
Y
Y
E
N
G
S
A
F
S
A
J
A
R
B
W
O
C
G
D
N
X
U
D
Z
U
I
R
F
F
Y
A
D
O
O
B
J
E
U
I
F
X
A
M
R
U
E
L
I
M
T
B
Z
A
R
L
I
H
B
E
O
I
T
O
E
L
E
T
M
R
N
A
M
F
U
X
C
W
O
T
L
I
H
H
E
Q
E
T
F
X
A
V
I
W
R
A
D
F
C
I
I
U
T
E
R
U
S
E
U
I
U
I
O
O
I
X
G
E
T
S
F
E
O
B
U
D
B
E
W
H
H
C
N
X
U
A
B
O
A
M
A
I
T
O
Z
S
O
H
T
O
A
I
I
U
O
E
R
U
B
E
C
O
Q
L
L
A
P
C
J
V
T
T
S
J
M
D
C
X
O
R
L
D
N
U
E
R
H
H
O
O
C
F
F
A
T
R
I
M
E
S
T
E
R
