(bright, uplifting music)
- Grow, grow, grow.
That's what your baby is
doing around the clock
at a pretty spectacular rate.
By week eight, your baby measures
just over half an inch long
and has grown from
blueberry size to the size
of a big juicy raspberry.
Much of baby's bulk is
taken up by its big head
where all that brain-building
activity is going on.
Nerve cells are multiplying
and connecting with each other.
The beginnings of a neural network
that will later transmit
messages from brain to body.
But it's not just the
brain that's bulking up.
Growth spurts are happening
all over baby's body now.
One place you'll notice a big change:
the arms and legs.
Those limbs are getting
longer and stronger,
thanks to newly developing
cartilage and bones.
Joint formation is also
on the agenda this week,
which means shoulders, elbows and knees
are just around the bend.
Fortunately, your baby's tadpole tail
isn't part of these growth spurts.
It's completely gone now
and your embryo finally
looks less reptilian
and more human.
He's got the beginnings of a neck,
the upper lip is forming
and there's the sweet
suggestion of a button nose.
Tiny eyelids cover tiny eyes
and fingers and toes are developing,
though they're still webbed.
Your baby's umbilical cord is visible now,
and the intestines are starting
to develop inside of it.
Don't worry, those intestines will migrate
into baby's belly soon enough.
Baby's heart has divided into
the right and left chambers
and is beating around
150 beats per minute now.
That's more than twice the rate of yours.
It's not just baby who's
getting bigger by the day.
His cozy quarters are also getting bigger.
Your amniotic fluid increases
by about two tablespoons a week
so your roomie's got room to move
and to keep on growing.
It won't be long before
your bigger-by-the-minute
baby and uterus start making your
bump look bigger by the minute too.
(bright, uplifting music)
