"Toward Maturity" PPT

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"Toward Maturity" PPT

Part One: Human Growth Period

What periods have you gone through? What period are we in now?

think:

1. Observe Figure 1-11 carefully and talk about which age groups grow and develop fastest.

2. Which growth period of the human body do these age groups correspond to?

Toward Maturity PPT, Part 2: Adolescence (Adolescence)

Adolescence is the transitional period when children become adults.

Height changes during adolescence

emergence of secondary sex characteristics

The differences between male and female reproductive organs are called primary sexual characteristics

By puberty, in addition to differences in primary sex characteristics, males and females also have different changes in appearance. This difference between males and females other than reproductive organs is called secondary sex characteristics.

Male secondary sexual characteristics: long beard, protruding Adam's apple, deep voice, excessive body hair, etc.

Female secondary sexual characteristics: breast enlargement, higher pitch, wide pelvis, and significant thickening of subcutaneous fat

Development and maturation of reproductive organs

Menses: After a girl's ovaries mature, a mature egg is released from the ovaries approximately every 28-30 days. During the process of egg maturation and discharge, under the action of hormones secreted by the ovary, the endometrium becomes congested and thickened, allowing the egg to implant into the endometrium after fertilization. If the egg is not fertilized, the thickened endometrium dies and falls off, causing bleeding. The fragments of the shed endometrium flow out of the vagina together with the blood. This is menstruation.

spermatorrhea

Spermatorrhea: Nocturnal emission is a normal physiological phenomenon that occurs after the male reproductive organs mature during puberty. When the semen is filled, the semen in the body is stored too much. If there are other stimuli, such as dreaming about the opposite sex, being pressed by bedding, and underwear that are too tight, nocturnal emissions will occur. Secretions from the epididymis, vas deferens, seminal vesicles, prostate, and urethra are usually discharged with urine without being noticed.

Nocturnal emission marks the maturity of male reproductive function.

The functions of internal organs are getting better and better

Such as: (1) Increased cardiac contractility

(2) Increased pulmonary ventilation

(3) The brain regulation function is enhanced, and the ability to understand, analyze problems and make judgments is improved.

Towards maturity PPT, the third part: summary

1. Development of puberty

1. Changes in human appearance

2. Development and maturation of reproductive organs

Male: nocturnal emission

Women: menstruation

3. Internal organs functions are getting better and better: heart, lungs, brain

2. The changing characteristics of people in various periods

There are 2 periods of rapid growth

Early childhood

puberty

adolescence

adulthood

Aging period

3. Physical and mental health in adolescence

Issues to pay attention to when developing healthy body

Reasonable meals

Work and rest on time

Good posture

sports activities

Treat secondary sexual characteristics correctly

Pay attention to cultivating self-control ability

Toward Maturity PPT, Part 4: Discussion:

The occurrence of menstruation in girls and nocturnal emissions in boys means that the reproductive organs of girls and boys have initially matured and have entered the stage of puberty.

During adolescence, the changes that occur in the human body are that the appearance and body shape develop toward adulthood, the appearance of secondary sexual characteristics, the development and maturity of reproductive organs, and the functions of internal organs become increasingly perfect. Among them, the development and maturation of reproductive organs are the main changes.

Keywords: Zhejiang Education Edition seventh-grade science PPT courseware for the second volume free download, toward maturity PPT download, .PPT format;

For more information about the "Going to Maturity" PPT courseware, please click the "Going to Maturity" ppt tag.

"Towards Maturity" PPT download:

"Towards Maturity" PPT download Puberty Concept: It is the period when human gonads begin to develop and reach maturity. It is the transition stage from childhood to adulthood. The World Health Organization considers the age range of puberty to be 10 to 20 years old. Adolescence is the transition from child to "adult"...

"Towards Maturity" PPT courseware:

"Toward Maturity" PPT courseware Part 1: Thinking about questions Human development is divided into embryonic development and post-embryonic development. Thinking? Which growth stages have you experienced? What growth period are you in now? Do you know what puberty is? The first growth peak period..

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Update Time: 2024-09-28

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