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Period: to
weeks 1-2
none -
weeks 3-4
- conception -zygote turns into blastocyst and travels -rapid cell division begins -blastocyst implants in the uterus lining during week 4 and becomes and embryol
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Period: to
weeks 5-6
-neral tub closes, the brain and spinal cord will form
- heart, organs, and bones start to form
- develop head and truck
- brain begins development
- eyes and ears begin to form -
Period: to
weeks 7-8
-Brain and face shape begin growing
-Four-chamber heart
-lungs begin to form -
Period: to
week 22
- has nails, fingerprints, eyebrows, lashes, and possibly some hair
- more active
- heartbeat heard with a stethoscope
- lowest limit of ria
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Period: to
week 10
- head is half
- All body parts
- eyes, ears, arms, and legs are identifiable
- baby is 1 1/4 inches long
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Period: to
week 11
- genitals develop -head is about half of the length of baby
- teeth buds form
- baby is about 2 inches in length and weighs about 13 ounces
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Period: to
week 12
-fingernails grow
-face has a more defined profile
-intestines are in the abdomen
- about 2 1/2 inches length & weighs about 1/2 ounces -
week 14
- baby sex will become apparent
- baby can swallow and make urine
- baby is about 3 1/2 inches in length and weighs about 1/2 ounces
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Period: to
week 16
-baby is moving but mom cannot feel it
- baby is about 4 1/2 inches i length and weighs about 4 ounces -
Period: to
weeks 18-19
- baby begins to hear
- the digestive system works -vernix caseosa covers the baby
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week 20-21
- regular sleep and wake patterns
- all organs and structures formed
- breathing movements occur but are development
- covered in lanugo
- may begin to suck thumb
- baby is about 6 1/3 inches in length and weighs about 11 ounces
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week 24
- wrinkly skin
- develop a regular sleep
- baby is about a month in length and weighs about 1/3 pounds
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weeks 28-29
- eyes open and close
- breathing and temp. control
- lungs can breathe
- baby kicks and streches
- baby 20 inches and weigh 2 1/4
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weeks 31- 32
- finish major
- rapid gain in weight
- langue starts to fall off
- baby 11 inches and weigh 33/4 pounds
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week 34
- continue to grow fingernails and toenails
- breathing motion
- skin pink and smooth
- baby 12 inches and 4 1/2
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weeks 36-37
- takes up amniotic sac
- starts to turn head and labor ready
- baby 13 1/2 inches and 6 pounds
- countine to gain 1/2 pound till delivery
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Period: to
weeks 38-40
- brain, lungs, and liver developing
- brain size x2 weeks 35 and 39
- lung development last few weeks helps with fewer complications
- B9, considered full term
- weight gain helps with temperature control