Ch 15 reaching the age of adolescent DAV notes
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Adolescence: Adolescence is that period of life when many changes start taking place in the body; which results in reproductive maturity. It usually begins at around age of 10 years and is seen till 18 or 19 years of age.
Adolescents are also called as teenagers as teen age period is also covered up in adolescence.
Teenage: The number of years during adolescence span is counted as ‘teen’, .e.g. thirteen, fourteen and fifteen. Hence, this duration is also termed as teenage.
Puberty: The process of transformations taking place during adolescence period is known as puberty. The onset of puberty points out the starting of adolescence. And the end of adolescence or puberty informs about the completion of reproductive maturity.
The Various Changes taking place during puberty
1. Increase in Height:
(i) It is the most visible change noticed during the puberty.
(ii) In the beginning, it is observed that the girls grow faster than boys, but, on reaching 18 years of age, both gain their maximum height. Also, the rate of growth in height differs individually.
(iii) During these years, it is really significant to eat nutritious food for better development of bones, muscles and other parts of the body.
2. Change in Body Shape:
(i) During puberty, boys will start having broad shoulders and wider chests while in case of girls the region below the waist becomes broader.
(ii) Moreover, the muscles of boys will grow more prominently than in the girls.
3. Change in Voice
(i) During puberty, it is being noticed that voice of boys starts cracking and their voice box or larynx starts to grow.
(ii) Adam’s apple: The increase in the size of voice box in boys is seen as a prominent protrusion in the neck. This protrusion is called Adam’s apple.
Moreover, girls will usually have a high pitched voice while the boys will have deeper voice.
4. Increased Activity of Sweat and Sebaceous Glands:
The Sweat glands present starts operating and produces more sweat. And the Sebaceous glands or oil glands increased function results in pimples or acne.
5. Development of Sex Organs:
(i) Growth of sex organs takes place and are found to be more active. In males, the testes start to produce male gametes, called sperms. And in females, the ovaries start developing and releases one mature ovum once in 28 days.
(ii) In males, the size of the penis increases with respect to ages. On the other hand, development of breasts is observed in females.
6. Reaching Mental, Intellectual and Emotional Maturity:
(i) Brain becomes more active and so more learning take place.
(ii) Mental and intellectual maturity is seen.
Secondary Sexual Characters: These are the characters that distinguish a male from a female.
1. In males, growth of hair is seen on face and body. And hair growth is seen in the under the arms and in the region above the thighs or pubic region in females.
2. Shoulders get broad and chest gets widened in males. The waist gets wide and hips get narrow in females.
3. The development of breasts takes place in females.
4. Mood swings are seen in males as well as females. Mental and emotional maturity is attained by both sexes. Brain gets more active and has capability of learning more.
Hormones:
Hormones are the chemical substances secreted by endocrine glands for proper functioning taking place during adolescence in the human body
In males, at the beginning of puberty, the hormone or testosterone begins to get released by the testes. And this results in some changes in boys like the growth of facial hair, deep voice and hair on chest.
In females, ovaries start to produce the female hormone or estrogen which results in breasts development on reaching puberty. Also, milk secreting glands or mammary glands development takes place inside the breasts.
The production of these hormones is under the control of another hormone secreted from an endocrine gland called pituitary gland. The testes and ovaries secrete sex hormones. These sex hormones are controlled by the hormones secreted from the pituitary gland. The pituitary secretes many hormones, one of which makes ova mature in the ovaries and sperms form in the testes.