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प्रश्न
How is Placenta formed? What are its functions?
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उत्तर
It is formed by the union of uterine endometrial tissue, chorion, and allantois (embryonic tissue). It is attached to the wall of the uterus and through it, the exchange of nutrients, hormones, respiratory gases, and urea occurs between the fetal and maternal circulation.
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संबंधित प्रश्न
Name the following:
The fluid surrounding the developing embryo
State whether the following statements are TRUE (T) or FALSE (F):
Rewrite of the wrong statements by correcting only one word either at the beginning or at the end of the sentences.
Gestation period in humans is about 380 days.
Given below is the name of certain stage/substance related to reproduction and found in human body. Answer the questions related to it.
Hyaluronidase.
- Is it an enzyme or simply a protein?
- What is its function?
Given below is the name of certain stage/substance related to reproduction and found in human body. Answer the questions related to it.
Implantation.
- The development stage that undergoes this process.
- The approximate time after fertilisation, when it occurs.
Describe briefly the ways how a mammalian embryo is respires
Complete the following sentences with appropriate word:
The period of complete development of the fetus until birth is termed ______.
Complete the following sentences with appropriate word:
The umbilical cord connects _______
Mention any two functions of the human foetal placenta.
Mother's blood flows into the foetus through placenta.
Distinguish between the following pair:
Placenta and umbilical cord
