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Period: to
Zygote
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Period: to
Embryo
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Heart beats regularly. Eyes and ears begin to form.
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heart develops righ and left chambers
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bones are visible. heartbeat can be heard with a stethoscope
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fingerprints form
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Eyelids can open and weight can be up to 6.6 pounds.
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Period: to
Infancy
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Fetus
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A baby can hold its head up and reach for objects.
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Infant begins to crawl.
kakisky. "warmfuzzy.jpg." Online Image. morguefile. No date. 2/17/12 http://morguefile.com/archive/display/181930. -
Period: to
Childhood
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Ovulation in females, and sperm production in males begin.
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Period: to
puberty
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Period: to
adolescence
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Period: to
adulthood
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skin starts to become wrinkled
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aging begins
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aging becomes more noticeable and progresses rapidly