Human Development


Welcome to class! 

In today’s class, we will be talking about human development. Enjoy the class!

Human Development

Human Development

Puberty and Adolescence

  • Puberty:

It is the stage of life when a child becomes sexually mature. Puberty lasts from about 12 to 18 years of age in boys and about 10 to 16 years of age in girls. The age when puberty begins is different from one child to another. Children that begin puberty much earlier or later than their peers may feel self-conscious. They may also worry that something is wrong with them.

Usually, early or late puberty is perfectly normal, you do not have to worry. In this stage, you have to learn hygiene, if not one will stink.

In boys, puberty begins when the pituitary gland tells the testes to secrete testosterone. Testosterone causes the following to happen:

  1. The penis and testes grow.
  2. The testes start making sperm.
  3. Pubic and facial hair grow.
  4. The shoulders broaden, and the voice becomes deeper.
  5. Start having sexual feelings.

In girls, puberty begins when the pituitary gland tells the ovaries to secrete estrogen. Estrogen causes the following to happen:

  1. The uterus and ovaries grow.
  2. The ovaries start releasing eggs.
  3. The menstrual cycle begins.
  4. Pubic hair grows.
  5. The hips widen, and the breasts develop.
  6. Start having sexual feelings

Boys and girls are close to the same height during childhood. In both boys and girls, growth in height and weight is very fast during puberty. However, girls grow faster than boys during puberty. Their period of fast growth also lasts longer. By the end of puberty, boys are an average of 10 centimetres (4 inches) taller than girls.

  • Adolescence:

It is the period of life between the start of puberty and the beginning of adulthood. Adolescence includes the physical changes of puberty. It also includes many other changes, including significant mental, emotional, and social changes. During adolescence:

  • Teenagers develop new thinking abilities. For example, they can think about abstract ideas, such as freedom. They are also better at thinking logically. They are usually better at solving problems as well.
  • Teenagers try to establish a sense of who they are as individuals. They may try to become more independent from their parents. Most teens also have emotional difficulties, mood swings. This is partly due to changing hormone levels.
  • Teenagers usually spend much more time with peers than with family members.


In our next class, we will be talking about Family Health.  We hope you enjoyed the class.

Should you have any further question, feel free to ask in the comment section below and trust us to respond as soon as possible.

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