"Puberty" The Origin of Man PPT Courseware 2

"Puberty" The Origin of Man PPT Courseware 2

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"Puberty" The Origin of Man PPT Courseware 2

Review and consolidate:

1. In the male and female reproductive systems, what are the organs that produce and transport germ cells?

2. What is the most important organ in the male and female reproductive system? What is the role of each?

3. Our physical development begins with __________, and its formation is within __________, which is the combination of __________ and __________.

4. The changes that occur after the fertilized egg is formed are: cells divide to form __________; __________ implants into __________, which is pregnancy; cells continue to __________ and __________ develop into __________; after __________ weeks of pregnancy, develop into a fetus; by the __________ week of pregnancy, the fetus matures.

5. What structure does the embryo and mother use to exchange materials, obtain nutrients and eliminate waste?

Discussion and exchange

1. Is there any difference in the age at which boys and girls gain height?

2. Are the changes in height of you and this group exactly the same as the data in the picture? If there are discrepancies, please analyze the reasons.

3. Are the changes in body shape of boys and girls related to the development of testicles and ovaries? How did you come to your conclusion?

4. What other changes occur between boys and girls during puberty?

Questions and reflections:

1. What are the salient features of physical changes during adolescence?

2. With the rapid development of sexual organs after entering puberty, what are the physiological phenomena that occur in boys and girls?

3. Why do boys and girls experience nocturnal emissions and menstruation? What hygiene conditions should girls pay attention to during menstruation?

4. Compare Picture 14 in the textbook with your own reality, communicate and discuss with your classmates, what psychological conflicts have occurred in adolescence? Connect with your own reality and tell me whether you have had similar problems?

How should these problems be handled correctly?

Typical example analysis:

The picture below shows the development trend of some reproductive organs of men and women. Please answer the questions based on the picture.

(1) It can be seen from the picture that in childhood, the development characteristics of sexual organs are ___________, almost in a __________ state.

(2) The main period of sexual organ development is from __________ to __________ years old. This period is called the __________ stage. The main reason for the development of sexual organs is that ______ secreted during this period promotes the development of sexual organs.

(3) From the picture, pubertal development in girls begins at approximately ____ years old; in men, pubertal development begins at approximately _____ years old.

(4) At the same time as the sexual organs develop, the human form also develops rapidly, which is mainly reflected in the rapid increase of ____ and _____.

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For more information about the "The Origin of Man Puberty" PPT courseware, please click on the "The Origin of Man ppt Puberty ppt" tag.

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