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18
Month 3
- about 1 inch long as month begins
- nostrils, mouth, lips, and eyelids form
- buds for all 20 baby teeth appear
- fingers and toes almost complete
- all organs present but still mature
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18
Month 4
- about 3 inches long, weight 1 once as month begins
- can suck its thumb, swallow, hiccup, and move around
- facial structures become clear
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Period: 18 to
Month 1
- size at two weeks, the size of a pin head
- egg attaches to the uterus -Critical stage for brain and spinal cord to develop
- internal organs and circulatory system begin to form
- the heart begins to beat
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Month 2
- the size is about 1/4 of a inch
- face, eyes, ears, and limbs start to form
- bones begin to form
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month 5
- about 6 1/2 inches long
- hair, eyelashes, and eyebrows appear
- teeth continue to develop
- organs are maturing
- becomes more active
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Month 6
- about 8-10 inches long, weighs 8-12 ounces
- fat deposits under skin, but fetus appears wrinkled
- breathing moments begin
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Month 7
- about 10-12 inches long, weighs about 1 1/2- 2 pounds
- has periods of activity followed by periods of rest and quiet
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Month 8
- about 14-16 inches long, weighs about 2 1/2- 3 ounces
- rapid weight gain continues
- may react to noises
- moves into head-down postition
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Month 9
- about 17-18 inches long, weighs about 5-6 pounds as month begins
- weight gain continues
- skin becomes as smooth as fat deposits continue
- movements decrease as the fetus has less movement to move around
- acquires disease fighting antibodies from the mother's blood
- descends into pelvis ready for birth