Page 453 - Primary Six Notes
P. 453
Changes during adolescence and puberty
Adolescence
Adolescence is the period following the onset of puberty dur-
ing which a young person develops from a child into an adult.
It is a transitional phase of growth and development between
childhood and adulthood.
A person at this stage is called an adolescent (ages between 10
and 19).
Puberty
This is the period of physical mental and sexual maturity i.e.
when one becomes a young adult capable of producing.
Changes in adolescents at puberty are called sex characteris-
tics. There are three types:
Primary sex characteristics
Secondary sex characteristics
Primary sex characteristics (Basic)
This involves the development of sexual organs for reproduc-
tion.
Primary sex characteristics in boys
Penis and testicles enlarge (increase in size)
The testicles start producing sperms (boys begin experienc-
ing wet dreams.
Internal organs begin producing fluid like semen.

