"Puberty" The Origin of Man PPT Courseware 3

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"Puberty" The Origin of Man PPT Courseware 3

Physical changes during puberty

Puberty (adolescence, puberty) is the transitional stage from childhood to adulthood. Its age range is about 10 to 20 years old. 10 to 15 years old is the stage of rapid development, and then gradually slows down. The pubertal development of girls is 2~ earlier than that of boys. 3 years.

Girls: 11~12 to 17~18

Boys: 13~15 to 19~20

Adolescence is the most critical and final stage of human growth and development.

There are a lot of important changes happening at this stage!

First, let’s take a look at the physical changes during puberty.

Basic concepts of adolescence

Sexual characteristics:

Differences inside and outside the body due to gender differences, divided into primary sex characteristics and secondary sex characteristics

Primary sexual characteristics:

Differences in reproductive organs between men and women

Male: testicles, epididymis, vas deferens

Female: ovaries, fallopian tubes, uterus

Secondary sexual characteristics:

It refers to the external differences in gender that appear between men and women after entering puberty, except for the reproductive organs.

Boys: beard, Adam's apple, low and thick voice, broad shoulders, narrow pelvis, appearance of pubic hair;

Girls: Breast development, high and thin voice, narrow shoulders, wide pelvis, appearance of pubic hair.

2. Psychological changes in adolescence and their hygiene

Psychological changes in adolescence

1. Have a strong sense of independence, become dependent when encountering setbacks, and long for the care of parents and teachers.

2. The inner world becomes more and more complex, and there are some things that I don’t want to discuss with my parents.

3. Sexual awareness begins to emerge.

After entering puberty, as the body develops, sexual consciousness also begins to emerge, which often manifests itself as an initial alienation from the opposite sex, to a gradual willingness to be close to the opposite sex, or a vague attachment to the opposite sex. These are normal psychological changes. It should be noted that this period is a critical period for learning knowledge, growing talents, establishing lofty ideals, and shaping a beautiful soul. Therefore, you should concentrate on studying hard, actively participate in various cultural, sports and social activities, help each other with classmates, communicate closely with teachers, and spend this golden years of life healthily.

3. Hygiene in adolescence

1. Treat your own physical and mental changes correctly and seek the best psychological balance;

2. Establish lofty ideals and cultivate noble sentiments;

3. Develop normal interpersonal interactions and achieve self-respect and self-love.

(1) The age at which girls’ height begins to increase suddenly is ______ than that of boys. The age at which boys begin to increase in height is approximately ______.

(2) Sudden growth in height is a significant feature of puberty, which means ______. Enter puberty earlier.

(3) We have observed that the testicles and ovaries are almost inactive during the ______ period, and after puberty, the sexual organs ______.

(4) In addition to changes in height and sexual organs, please try to write about what other changes occur in a boy’s body during puberty? Boys may also experience physical changes such as protruding Adam's apple, thickening of voice, growth of beard, pubic and armpit hair.

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Update Time: 2024-10-19

This template belongs to biology courseware People's Education Press seventh grade biology book volume 2 industry PPT template

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