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21 Cards in this Set
- Front
- Back
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Gestation
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conception to birth; usually lasts 40 weeks; approximately 9 months
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Zygote
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conception to 2 weeks
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Embryo
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3 to 8 weeks
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Fetus
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9 weeks to birth
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Trimester
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3 months
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1st Trimester
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everything is being formed or made (i.e. eyes, fingers, etc.)
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Amniotic Sac
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protects baby; helps cushion growing embryo; as fertilized egg grows, a water-tight sac forms around it, gradually filled with fluid
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Placenta
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how baby feeds; a round, flat organ that transfers nutrients from the mother to the baby, and transfers wastes from the baby; keeps blood supply of woman and baby separate; giant filter; filters mom's blood for baby
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Month 1
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blood cells are taking shape, and circulation will begin; primitive face takes form with large, dark circles for eyes; mouth, lower jaw, and throat develop; baby is 1/4 inch long
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Month 2
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major organs develop; but are not finished growing yet; eyes and ears grow; heart beats strongly
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Month 3
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baby fully formed; arms, hands, fingers, feet, and toes are formed; can open and close its fists and mouth; teeth are forming; circulatory and urinary systems work; liver makes bile
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Trimester 2
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things are growing and developing; everything except lungs forms
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Month 4
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eyelids, eyebrows, eyelashes, nails and hair formed; teeth and bones become denser, baby can suck his or her thumb, yawn, stretch, etc.; nervous system is starting to function; reproductive organs and genitalia are now fully developed; everything developing
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Month 5
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baby's skin covered with vernix caseasa; baby 10 m. long, weighs 1/2 to 1 lb.
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Month 6
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baby may respond to sounds by moving or increasing the pulse, and you may notice jerking motions if baby hiccups; if born prematurely, baby may survive after this month with intensive care
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Trimester 3
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baby is pretty much just growing in size; getting bigger; lungs finish developing
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Month 7
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fat begins to be deposited on baby; hearing fully develops; baby changes position frequently; responds to stimuli (sound, pain, light, etc.); amniotic fluid begins to diminish
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Month 8
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baby kicking more; brain developing rapidly; can see and hear; most internal systems are well developed; lungs may still be immature
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Month 9
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lungs nearly fully developed; reflexes coordinated; can blink, close eyes, grasp firmly, respond to stimuli; baby moves less now, because not enough room; head will face down, to prepare for birth; don't want "breech"
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Breech
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head wrong way
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Vernix Caseasa
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protect's baby's skin from long exposure to amniotic fluid; is shed just before birth
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