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प्रश्न
The circulatory system of the fetus and that of the mother are never connected directly. What are the advantages?
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उत्तर
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.
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संबंधित प्रश्न
Name the following:
The canal through which the testes descend into the scrotum just before birth in human male child.
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.
Differentiate between:
Impotency and sterility
Differentiate between:
Amnion and allantois
Name the following:
The structure which connects the placenta and the foetus.
The diagram given below shows an embryo in the uterus of mammal. Label the parts indicated.
Name the Following
How the embryo inside the uterus is protected from jerks or mechanical shocks.
Complete the following sentences with appropriate word:
The umbilical cord connects _______
During pregnancy, which hormones are secreted by the placenta?
Mention any two functions of the human foetal placenta.
