-
Period: to
Weeks 1/2
Baby is just conceived. Baby has no development. No changes occur here. -
Period: to
Weeks 3/4
The zygote turns into blastocysts. Travels through the Fallopian tubes. Rabid cell division and by week 4 baby turns to an embryo. -
Period: to
Weeks 5/6
Brain and spinal cord forms. Heart , Organs , and bones form. Eyes and ears begin to form. -
Period: to
Weeks 7/8
The brain and face begin to grow. The 4 chamber heart- lungs begin to form. Fingers and toes being to form. -
Period: to
Week 10
Head is half the size of the baby. All body parts are presented. Baby is 1 1/4 inches long. -
Period: to
Week 11
Genitals develop. Head is about half the length of the baby. Teeth buds form. -
Period: to
Week 12
Fingernails grow. Face has a defined profile. About 2 1/2 inches in height. -
Week 14
Baby sex becomes apparent. Baby can swallow and make urine. Baby is about 3 1/2 inches. -
Week 16
The baby is moving but the mom cannot feel it. Baby is about 4 1/2 inches long. The baby weighs about 4 ounces. -
Period: to
Weeks 18-19
The baby begins to hear. The digestive system starts to work. Vernix caseosa covers the baby. -
Period: to
Weeks 20-21
Baby starts to have a regular sleep and wake schedule. The baby may start sucking it's thumb. All organs are formed. -
Week 22
Has nails, fingerprints, eyebrows, lashes, and possible some hair. The baby is more active. Heartbeat can be heard with a stethoscope. -
Week 24
The baby will have wrinkly, translucent and light pink skin. Lung development. Regular sleep schedules -
Weeks 29-29
Eyes begin to open partially. Lungs are capable of breathing. Baby begins to kick -
Weeks 31/32
Baby has finished most development. Rapid weight gain. Langue starts to fall off. -
Week 34
Fingernails continue to grow. Responds to light. Skin is pink and smooth -
Weeks 36/37
Takes up most of the amniotic sac. Head starts to turn down and prepare for labor. Baby is about 13 1/2 inches long. -
Weeks 38/40
Major Organs are still in it's last development stages. Brain will double in size. Lung development will continue to prevent complications during birth.