Human Development (biology)

Article Index for
Human Development

Website Links For
Human Development

Information About

Human Development (biology)

--- Neonate (newborn) (0-30 days)

--- Infant (baby) (1 month-1 year)

--- Toddler (1-4)

--- Primary School age (also called prepubescence) (4-10)

-- Elementary School age (also called middle childhood) (4-9)

-- Preadolescence (preteen, or late childhood. The child in this and the previous phase are called ''schoolchild'' (''schoolboy'' or ''schoolgirl''), when still of primary school age.) (10-12)

Adolescence And Puberty (teenage) (13-19)

Young Adult (19-25)

Adult (exact minimum age may vary)

--- Early Adulthood (20-39)

--- Middle Age (40-59)

--- Advanced Adult / Senior Citizen / Old Age (60+)

Death (occurs at various ages, depending on person)

--- Decomposition (breakdown of the physical body after death)

Also sometimes used are terms that specify one's age in numbers, such as:

Child (0-12)

Teenager (13-19)

Twenty Something (20-29)

Thirty Something (30-39)

Forty Something (40-49) (Formerly also Quadragenarian, rarely used since 1980)

Quinquagenarian (50-59)

Sexagenarian (60-69)

Septuagenarian (70-79)

Octogenarian (80-89)

Nonagenarian (90-99)

Centenarian (100-109)

Supercentenarian (110+)

Physical development milestones

Ability to lift and control the orientation of the head

Crawling begins

Walking begins

Speech begins

Voice lowers in pitch (especially noticeable in boys)

Pubic Hair appears

Genitals and reproductive organs mature

Menses begin (females)

Body Hair and Facial Hair appears

Note: the Tanner Stages can be used to approximately judge a child's age based on physical development.

SEE ALSO

Child Development

Developmental Biology

Auxology

Embryogenesis

Mammalian Embryogenesis

Life-history Theory