- Your baby's not quite ready for a cap and gown,
but this week, it's graduation time
as your little one graduates from her
embryonic stage and officially enters the fetal period.
At about an inch long, the graduate
is the size of a medium green cocktail olive.
But please, hold the martini.
Baby's heart is now both developed and large enough
to be picked up by ultrasound.
But if your practitioner can't detect the thump-thump
of that little ticker this week, don't worry.
It probably means your tiny target is hiding out
in a far corner of your uterus,
or facing away from the sensor.
Sometime in the next few weeks,
you'll get a listen for sure.
Your little body builder can boast the groundbreaking
of some brand new organs this week.
The liver, the spleen and the gallbladder
are all under construction now.
The bladder and the urethra separate
from the developing digestive tract
and the intestines begin to move
out of the umbilical cord and into the abdominal cavity,
which has grown big enough to house them.
The diaphragm starts to form.
It's the muscular membrane that will
separate the chest and abdomen
plus help your cutie breathe after she's born.
And though you won't feel it yet,
your baby is trying out some early moves.
Tiny muscles are starting to develop
allowing your little dancer to make
spontaneous reflex movements with those tiny arms and legs.