-
week 4
*Arm and leg buds become visible
*The eye and ear structures begin to form
*The heart develops more and beats at a regular rhythm
*The embryo is 1\4" long -
week 8
*Eyelids are facial
The embryo becomes a fetus
*The skeleton is well formed -
week 12
the face features are well formed
tooth buds appear -
week 16
fetus starts moving around
bones become harder -
week 18
the fetus can now hear -
week 23
fetus is 6-7" long
eyebrows and eyelashes -
week 25
eyes open and close
nervous system is developed -
week 30
the fetus can suck its thumb
the bones are fully developed but soft -
week 33
fetus is 12" long
weighs 4.5-6 pounds -
week 40
head hair is thicker
organs grow stronger
fingernails reach end of finger tips
