-
Period: to
Zygote
-
Period: to
Embryo
-
Heart beats regularly. Eyes and ears begin to form.
-
Heart develops right and left chambers.
-
Period: to
Fetus
-
Infant begins to crawl.
-
Bones are visible. Heartbeat can be heard with a stethoscope.
-
Fingerprints form.
-
Eyelids can open and weight can be up to 6.6 pounds.
-
Period: to
Infacy
-
A baby can hold its head up and reach for objects.
-
This is my first birthday party.
My friends, family, and many other people were there to help me celebrate. I don’t exactly remember the exact event but my mom told me that it was a great party. -
Period: to
Childhood
-
A baby can hold its head up and reach for objects.
-
Period: to
Puberty
-
Period: to
Adolescence
-
Period: to
Adulthood
-
Skin starts to become wrinkled.
-
Aging begins.
-
Aging becomes more noticeable and progresses rapidly.