-
Period: to
week 1-2
nothing changed -
Period: to
week 3-4
-conception
-rapid cell division begins
-zygote turns into blastocyst and travels down the Fallopian tube
-blastocyts implants in uterus lining during week 4 and becomes embryo -
Period: to
week 5-6
-neural tube closes the brain and spine cord with form
-heart, organs, and bones start to form
-develop head and trunk
-arm, leg, limb buds apear
-br5ain begains to develop
-eyes and ears begin to form
-heart begins to beat regular rythm
-baby is 1/6 inch long -
Period: to
week 10
-head is half of size of baby
-all body parts are present
-eyes,ears, arms, and legs are identifiable
-baby is 1 1/4 inch long -
Period: to
weeks 7-8
-brain and face begin to form
-4 chamber heart
-fingers and toes begin to form
--trunk and neck begin to straighten
-ears and nose have formed
-baby is about 1/2 inch long
-an major organs are formed -
Period: to
week 11
-genitals develop
-head is abt half of length of baby
-teeth buds form
-baby is about 2 inches in length and weight is abt 1/5 ounces -
Period: to
week 12
-fingernails grow
-face has more defined profile
-intestines are in the abdomen
-about 2 1/2 inches in length and weighs at 1/2 ounce -
Period: to
week 14
-babys sex will become apparent
-baby can swallow and make urine
-baby is abt 3 1/2 inch in length and weighs about 1 1/2 ounces -
week 16
-baby is moving but mom cant feel it
-baby is about 4 1/2 inches in length and weighs abt 4 ounces -
Period: to
weeks 18-19
-baby begins to hear
-digestive sytetem works
-vernix caseasa covers the baby -
Period: to
weeks 20-21
-regular sleep and wake patterns
-all oragans structcres froms
-breathing movments occur but are underdevepoped
-covered in lanugo
-may begin to suck thumb
-baby is abt 6 1/3 inches in length and weighs abt ounce -
Period: to
week 22
-has nails, finger prints, eyebrows, lashes, and possibly hair
-more active
-heart beat heard with a stethoscope
-lowest limit of visablilty (survival out side of the mother)
-baby is abt 7 1/2 inches in the length and weighs about 1 pounds -
week 24
-wrinkly skin, transparent, and pinkish red
-lung developement
-regular sleep and wake patterns
-baby is about 8 inches in length and weighs about 1 1/3 pounds -
week 28-29
-eyes begin to partiality open and close
-central nervous system -
Period: to
week 31-32
-finfished most major development
-rapid weight gain begins
-lanugo starts to fall off
-baby is about 11 inches in length and weighs about 3 3/4 pounds