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Zygote
Fertilized egg turns into a bundle of cells called a zygote -
Embryo
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Fetus
Human features begin to form and organs start to develop after a few months -
Baby
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Period: to
Infancy
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Period: to
Childhood
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Infant
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Toddler
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Puberty
Hair begins to grow in specific area, voice deepens, and height and weight increases -
Menarche
A girl experience their first menstrual period -
Period: to
Adolescence
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Period: to
Early Adult
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Period: to
Middle Adult
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Menopause
Menstrual cycle stops -
Old age
Skin begins to Wrinkle and hair turns grey -
Period: to
Late Adult
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Old age
Body begins to shrink