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प्रश्न
Write one sentence using the following term pertaining to reproduction in humans.
Placenta
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उत्तर
The placenta is the blood vessel-containing cord that connects the embryo to the mother's uterine wall.
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संबंधित प्रश्न
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 are the names of certain stages/substances related to reproduction and found in human body. Answer the questions related to them.
Gestation
• What is its meaning?
• How long does it normally last?
Describe briefly the ways how a mammalian embryo is protected
Differentiate
Amnion and Chorion.
The diagram given below is that of a developing human foetus in the womb. Study the same and then answer the questions that follow:
- Name the parts '1' to '5' indicated by guidelines.
- What term is given to the period of development of the foetus in the womb?
- How many days does the foetus take to be fully developed?
- Mention two functions of the parts labelled ‘2’ other than its endocrine function.
- Name the hormone (anyone) produced by the part labelled ‘2’.
- What is the function of the part marked ‘3’?
Complete the following sentences with appropriate word:
The period of complete development of the fetus until birth is termed ______.
Write the functional activity of the following structure:
Placenta
Mention any two functions of the human foetal placenta.
Assertion (A): The foetus respires but does not breathe.
Reason (R): The maternal blood supplies oxygen to the foetus through placenta.
Mother's blood flows into the foetus through placenta.
