"The Birth of New Life" PPT (Second Lesson)

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"The Birth of New Life" PPT (Second Lesson)

Part One: Discussion

The instructions for some medicines often say "Use with caution during pregnancy" or "Contraindicated during pregnancy". Why is this?

Medicines have some side effects, which the mother can bear. However, these drugs can act on the fetus through the placenta. Since the fetus is young and its organ systems are not fully developed, it may not be able to withstand the toxic and side effects of these drugs, affecting the development of the fetus, and even causing teratogenesis and death. If pregnant women drink, smoke, or take drugs, they can also poison the fetus.

The birth of new life PPT, part 2: the whole process of embryo development in the womb

first month

Even though I'm only as big as an apple's seed, my heart is already beating.

second month

I have begun to take shape, but unfortunately I am only the size of a walnut.

third month

I was busy doing stretching exercises in my mother's belly all day long. Sometimes I stretched my arms and sometimes kicked my legs. This was how I was saying hello to my mother!

fourth month

You see, I'm almost as big as my mother's hand. The fourth month is a critical period for me to grow tooth roots. Mom, you need to eat more calcium-containing foods so that I can grow strong tooth roots in your belly.

The birth of new life PPT, the third part: class discussion

1. Babies must cry loudly when they are born, otherwise they may die. What effect does this cry have on the baby?

The moment the doctor cuts the umbilical cord, the baby's source of oxygen is cut off. Crying fills the baby's lungs with air and initiates spontaneous breathing.

2. What is the scar formed after the baby's umbilical cord is cut?

After the umbilical cord is cut, it will dry up and become scarred in about 10 days, which is the navel.

3. Newborn baby’s diet.

Breast milk: Because it is rich in nutrients and disease-fighting substances

The Birth of New Life PPT, Part 4: Choice:

1. Nutrition for embryonic development comes from ( )

A. Placenta B. Yolk C. Umbilical cord D. Yolk and placenta

2. The way the fetus obtains nutrients from the mother’s body ( )

A. Obtained directly from the mother through the uterine wall

B. Obtained from the uterine wall through the umbilical cord

C. Obtained from maternal blood through the umbilical cord

D. Obtained from maternal blood through the umbilical cord and placenta

Keywords: Zhejiang Education Edition seventh grade science PPT courseware for the second volume free download, the birth of new life PPT download, .PPT format;

For more information about "The Birth of a New Life" PPT courseware, please click on the "The Birth of a New Life" PPT tab.

"The Birth of New Life" PPT (first lesson):

"The Birth of New Life" PPT Part One: Understanding Sperm and Egg Cells Sperm Male Germ Cell Sperm is much smaller, about 0.05 mm long, has a tail and can swim. Egg cell female germ cell The egg cell is spherical, 0.1 mm in diameter,...

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Update Time: 2024-10-29

This template belongs to science courseware Zhejiang Education Edition Seventh Grade Science Volume 2 industry PPT template

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