Prenatal Development
by
Samiksha
Last updated 6 years ago
Discipline:
Science Subject:
Human Anatomy


Prenatal development
A timeline from conception to birth
Time Line
Week 4
The baby is now an embryo
Week four- Week nineThe embryonic period begins, the baby's heart begins to beat, fingers and toes form, and movement begins.
Week 10- Week 15Neurons begin to form, the baby's sex becomes apparent, hormones gear up, and skin begins to form.
Week 26- Week 36The baby's eyes open, bones become fully developed, reproductive development continues, downy hair falls off, baby detects light, the protective coating gets thicker baby can suck.Week 37- birth The baby is now full term. The baby becomes rounder and organ functions continue to improve, like the nervous system. The placenta provides anitbodies for the baby that will protect it for six months. Soon after, the baby if born
Week 16- Week 20fat accumulates, the baby begins to hear, a pasty white coating covers the baby, and the baby reaches the halfway point of development
Week 21- Week 25The baby's taste buds develop, the lungs prepare to be outside the womb, the inner ear develops, the baby's hands are now fully developed
Week 1- Week 3The egg and the sperm are fertilized and become a zygote. The zygote is implanted and begins to divide
Week 10
the embryo is now a fetus
Week 16
facial expressions are possible
Week 25
birth
The baby is almost fully developed
The baby is born!
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