Review the key concepts, formulae, and examples before starting your quiz.
🔑Concepts
Adolescence is the period of life, ranging from approximately to years, when the body undergoes changes leading to reproductive maturity.
Puberty is the process of physical changes through which a child's body matures into an adult body capable of sexual reproduction. It ends when an adolescent reaches reproductive maturity.
The most conspicuous change during puberty is the sudden increase in height due to the elongation of the long bones of the arms and legs.
The , or the voice box, begins to grow during puberty. In boys, it develops into a protruding part of the throat called the , leading to a deeper voice.
Increased activity of and (oil) glands often leads to the development of acne and pimples in many young people during this period.
Development of Sex Organs: In males, and develop completely; in females, enlarge and eggs begin to mature.
Secondary Sexual Characters: Features that help to distinguish the male from the female, such as the growth of facial hair and development of breasts, controlled by hormones like (male) and (female).
Mental, Intellectual, and Emotional Maturity: Adolescents spend more time thinking, become more independent, and may experience mood swings due to hormonal changes.
📐Formulae
💡Examples
Problem 1:
A boy is years old and tall. If at the age of , a boy typically reaches of his full height, calculate his estimated full height at the end of the growth period.
Solution:
Explanation:
By using the growth percentage formula, we divide the current height () by the percentage of growth achieved at that age () and multiply by to predict the final stature.
Problem 2:
A girl is years old and tall. According to a growth chart, she has reached of her full height. What will be her approximate final height?
Solution:
Explanation:
The calculation indicates that the girl is likely to grow to approximately by the time her growth period concludes.