Puberty typically begins between the ages of 10 and 15 years in girls.

Testosterone is the primary hormone responsible for the physical changes associated with puberty in boys, such as increased muscle mass, deepening of the voice, and facial hair growth.

Menarche is the term used to describe the first menstrual period in a girl, typically occurring between the ages of 12 and 14.

Puberty typically begins between the ages of 11 and 16 years in boys.

Estrogen is the primary hormone responsible for the physical changes associated with puberty in girls, such as breast development, widening of the hips, and the onset of menstruation.

Adolescence is the term used to describe the period of physical and psychological changes that occur between childhood and adulthood, typically ranging from 11 to 19 years of age.

Deepening of the voice is a common physical change experienced by boys during puberty due to the increased production of testosterone.

Oligomenorrhea is the term used to describe the irregular menstrual cycles that are common during the early stages of puberty in girls, characterized by infrequent or absent periods.

Increased self-consciousness, mood swings, and difficulty concentrating are all common psychological changes experienced by adolescents during puberty.

Somatic growth spurt is the term used to describe the rapid growth in height and weight that occurs during puberty.

Acne is a common skin condition experienced by adolescents during puberty due to increased oil production and hormonal changes.

Gonadarche is the term used to describe the development of secondary sexual characteristics during puberty, such as breast development in girls and facial hair growth in boys.

Anxiety, depression, and mood swings are all common emotional challenges faced by adolescents during puberty.

Pubarche is the term used to describe the development of pubic hair during puberty.

Breast development is a common physical change experienced by girls during puberty due to the increased production of estrogen.