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-size of a pin head
-critical stage for brain and spinal cord development
-internal organs and circulatory system begin to form
the heart begins to beat -
-size about 1/4 long as months begins
-face,eyes, ears, and limbs take shape
-bones begin to form -
-size about 1 inch
- nostrils, mouth, lips, and eyelids form
-buds for all 20 baby teeth appear
- fingers and toes almost complete
- all organs present but still immature -
-size 3 inches, weighs 1 ounce
- can suck ts thumb, swallow, hiccup, and move around
- facial features become clearer -
- size about 6 1/2- 7 inches weighs about 4-5 ounces
- hair, eyelashes, and eyebrows appear
- teeth continue to develop
- organs are maturing
- becomes more active
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- size about 8-10 inches, weighs about 8-12 ounces -fat deposits under skin, but fetus appears wrinkled
- breathing movements begin
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- size about 10-12 inches, weighs about 1 1/2 - 2 pounds
- has periods of activity followed by periods of rest and quiet
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- size about 14-16 inches, weighs about 2 1/2 - 3 pounds
- rapid weight gain continues
- may react to loud noises with a relax jerking action
- moves into a head down position
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- size about 17-18 inches, weighs 5-6 pounds
- weight gain continues
- skin becomes smooth as fat deposits continues
- movement decreases as the fetus has less room to move around
- acquires disease-fighting antibodies from the mother's blood
- descends into pelvis, ready for birth
