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Question
The circulatory system of the fetus and that of the mother are never connected directly. What are the advantages?
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Solution
The separate circulatory system facilitates quick diffusion of nutrients, metabolic waste and respiratory gases between the foetus and the mother. Bacteria and other pathogens cannot pass from the mother to the foetus because they are filtered out by the placenta. Blood pressure changes in the maternal circulation also cannot affect the foetus which has delicate blood vessels.
RELATED QUESTIONS
Name the following:
The body part in which the embryo develops.
Name the following:
The structure which connects the placenta and the foetus.
Describe briefly the ways how a mammalian embryo is nourished
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 embryo inside the uterus is protected from jerks or mechanical shocks by ________
Write the functional activity of the following structure:
Uterus
Write the functional activity of the following structure:
Amnion
Amniotic fluid serves to provide oxygen to the foetus.
Which nitrogenous waste product is removed from the foetus by the placenta through diffusion into maternal bloodstream?
