4. The Uterus
The fundus is the
upper portion where
Fundus the fallopian tubes
connect to the uterus.
5. The Uterus
The corpus is the main
portion of the uterus
which expands to hold
the developing fetus.
Corpus
6. The Uterus
The cervix is the lower
portion which opens into
the vagina. It contains a
channel that sperm, and
blood can enter and exit
through.
Cervix
7. Gestation
Gestation is the time
required for a fetus to
develop.
It lasts for 40 weeks, and
if a baby is born before
37 weeks, it is considered
premature.
There are 3 trimesters in
a pregnancy.
There are 2 stages to
gestation.
8. Gestation: Stage 1
The fertilized egg
implants itself into the
uterus.
The infant is referred to
as an embryo.
All of the embryos major
organs are formed; birth
defects may occur.
Pregnancy weeks 1-13.
9. Gestation: Stage 2
The embryo has
developed all of its major
organs and is now
considered a fetus.
The organs mature and
begin to function.
The fetus receives
nourishment from its
mother through the
placenta.
Stage 2 is the longest
stage of gestation.
11. Labor & Delivery Stage 1: Dilation
Dilation is the stage
when the uterine muscle
contracts to expel the
fetus.
The fetus presses against
the cervix and causes
dilation and expansion.
12. Labor & Delivery Stage 2:
Expulsion
As the cervix dilates, and
becomes thinner it is called
effacement.
Once the cervix is fully
dilated (10 cm) expulsion
begins.
Once the baby’s head
appears it is called
crowning, but If the baby’s
buttocks comes first the
baby is breech.
Ends in the birth of a baby.
13. Labor & delivery Stage 3:
Placental
This is the final stage of
labor.
After labor the uterus
continues to contract
which causes the
expulsion of the
placenta.
Editor's Notes
To the right is a picture of a freshly delivered placenta.
