Advertisements
Advertisements
Question
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.
Advertisements
Solution
- 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.
APPEARS IN
RELATED QUESTIONS
Give an appropriate biological or technical term for the following:
The fluid which surrounds the foetus.
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.
During pregnancy, which hormones are secreted by the placenta?
All are functions of placenta, EXCEPT ______.
The haemoglobin of a human foetus ______.
Given below is the name of certain stage/substance related to reproduction and found in human body. Answer the questions related to it.
Foetus.
- Where is it contained?
- How does it differ from embryo?
A disc-like structure attached to the uterine wall that supplies food and oxygen to the foetus and removes waste is known as which of the following?
The average gestation period from conception to parturition is approximately how many days?
Which nitrogenous waste product is removed from the foetus by the placenta through diffusion into maternal bloodstream?
