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प्रश्न
Given below is the name of certain stage/substance related to reproduction and found in human body. Answer the questions related to it.
Placenta
- What are the two sources that form placenta?
- Name any two main substances which pass from foetus to mother through placenta.
- Name any two hormones it produces.
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उत्तर
- The placenta is formed of two sets of minute finger-like projections, the villi. One set of villi are given out by the uterine wall and the other set by an extension (allantois) from the embryo.
- Carbon dioxide and urea.
- Oestrogens and progesterone.
संबंधित प्रश्न
Name the following:
The fluid surrounding the developing embryo
State whether the following statements are TRUE (T) or FALSE (F):
Rewrite the wrong statement by correcting only one word either at the beginning or at the end of the sentence.
Nutrition and oxygen diffuse from the mother’s blood into the foetus’s blood through amnion.
Describe the functions of Amnion
The circulatory system of the fetus and that of the mother are never connected directly. What are the advantages?
The diagram given below shows an embryo in the uterus of mammal. Label the parts indicated.
All are functions of placenta, EXCEPT ______.
Which of the following hormones is produced by ovary?
In human beings, the placenta is formed by ______.
Does the foetus inside the mother's uterus breathe?
Distinguish between the following pair:
Placenta and umbilical cord
