"Puberty" The Origin of Man PPT Courseware 5

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"Puberty" The Origin of Man PPT Courseware 5

Review: Human Reproduction

1. A person's life begins with ______.

2. In the male reproductive system, the organ that produces germ cells is ______,

The organ that transports germ cells is ( );

In the female reproductive system, germ cells are produced by ______,

The organ that transports germ cells is ______.

3. The fertilized egg continues to ______, gradually develops into ______, ______ slowly moves into the uterus, and finally implants into ______, which is the beginning of pregnancy.

4． The uterus is the place of ____________.

Which stage of human development after birth is usually referred to?

Postnatal development: through infancy, pre-infancy, early childhood, childhood, adolescence, and young adulthood.

Infancy – from birth to one year of age.

Pre-infancy – (nursery age) one to three years old.

Early childhood – (kindergarten age or preschool) three to six or seven years old.

Childhood - (primary school age) six, seven to eleven or twelve years old.

Adolescence - Approximately ten to twenty years old.

Youth - about twenty to twenty-five years old.

Sudden growth in height is a distinctive feature of adolescence.

1. There is a difference in the growth rate of height between men and women. Generally speaking, girls are 2 years earlier than boys, girls are 8.5-9 years old, and boys are 10.5-11 years old.

2. Are the height changes of you and the students in this group completely consistent with the data in the picture? If there are discrepancies, please analyze the reasons.

May not be entirely consistent. The data in the picture is just the average height of boys and girls in a certain place. Students of the same age and gender in different regions, different living conditions and different physiques will always have different height changes. Therefore, the height change data of myself and my classmates are often not completely consistent with the data in the figure.

3. The changes in the body shape of boys and girls are related to the development of testicles and ovaries. Through comparison, it is found that the height of boys and girls begins to increase significantly, and the weight also increases significantly, which will inevitably lead to changes in body shape.

Thoughts and psychological expressions of adolescence

① Increased worries, irritability, alienation from the opposite sex, very little happiness, and spend most of the time in stress and worry.

② There is some rebelliousness, psychological depression, and I love writing diaries more and more, but I will be very angry when my diary is peeked. He is competitive and refuses to admit defeat. He always seems to have secrets that he doesn't want to talk about.

③I feel that I have grown up and have many psychological conflicts. My thoughts have become mature, I have a strong sense of independence, I am dependent when encountering setbacks, my inner world has become increasingly complex, and sometimes I don’t want to communicate with my parents when I encounter certain problems.

④ Very shy. When I have youth beans, I am very afraid of being laughed at by others. Sometimes my father and mother talk to me, which makes me very annoyed. If I don’t want to say anything to my parents, I can say it to my classmates.

⑤I don’t care about this aspect very much, and everyone will have this period of time. I don’t think you need to think so much and focus on studying. Mental performance is good. We should maintain an optimistic attitude.

⑥I feel like I always want to be alone, always centered on myself, long for independence, and don’t want to tell my parents about some things.

⑦ Begins to feel disgusted with parents’ nagging, sometimes feels extremely irritated by heavy homework, and is very curious about a series of changes in the body.

⑧I want to get along well with students of the opposite sex and show my charm in the group. Communicate more with teachers and cooperate with them to improve your academic performance.

⑨I have grown up and don’t want my parents to worry about me. I don’t want to show my parents the diary I write. Sexual awareness begins to emerge, from alienating students of the opposite sex to getting close to the opposite sex, or developing a vague attachment to the opposite sex.

3. How to spend adolescence healthily

Adolescence is an important period in a person's life. This period is a critical period for learning knowledge, growing talents, establishing lofty ideals, and shaping a beautiful soul. therefore:

1. Students should correctly view their own physical and mental changes, be willing to open their hearts to parents and teachers, actively seek help and guidance, and spend their adolescence healthily;

2. Concentrate, study hard, and actively participate in various cultural and social activities.

3. Correctly understand the relationship between male and female students, unite and help each other, and show self-respect and self-love.

Class summary:

Section 3 Adolescence

1. Physiological changes during adolescence

1. Sudden increase in height and weight;

2. Rapid development of sexual organs - occurrence of nocturnal emissions and menstruation;

3. The nervous system and cardiopulmonary function are significantly enhanced.

2. Psychological changes in adolescence and healthy passage through adolescence

knowledge breakthrough

1. _____ is a distinctive feature of the onset of adolescence.

2. Boys generally enter puberty two years earlier than girls.

3. During puberty, the sexual organs of both boys and girls develop rapidly, with boys developing _____ and girls developing _____.

4． Nocturnal emission refers to the phenomenon that after a man enters ejaculation, ejaculation is expelled from the urethra sometimes in his sleep.

5. Menstruation is a _____ phenomenon that occurs when a woman enters puberty ( ) times a month.

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Update Time: 2024-10-18

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

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