Blood of mother never mixes up with that of foetus. Yet it nourishes the foetus. How?
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The blood of the foetus and the mother do not mix .The blood of the foetus in the capillaries of the chorionic villi come in contact with the mother's blood in the tissues between the villi, but they are always separated by a membrane through which diffusion of material takes place.
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The blood of mother never mixes with that of the fetus. The child gets nourishment from the placenta of the mother. The nutrients and oxygen diffuses from the mothers blood to the placenta. From where the focus gets nourishment
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