Does the Mother's blood exchange nutrients and wastes through the placenta?

Question

In other words, where is the semi-permeable barrier of the separate blood systems?

Answer 1

Yes of course mother's blood exchanges nutrients and wastes through the placenta. But, to make things more clear, the blood supplies nourishments and oxygen to the foetus, while the foetus gets rid of its wastes through the mother's blood, and the wastes are taken back for disposal through the mother's outlets, there being no developed system of the foetus and the way out for the discharge of the wastes.

As about the question about semi-permeable barrier of the separate blood systems, it can be said that when the foetus gets attached to the body of the mother, though his own blood systems work separately within his own body, but it takes shape of one of the body parts of the mother duly connected by a common connector, placenta. So, through that placenta the foetus, as one of the body parts of the mother, uses all the ability of mother's cell membranes to allow salts, glucose, urea and other soluble substances to pass in to and out of the cells from the body fluids, like as other body parts of the mother takes recourse to.

Answer 2

The placenta does exchange both nutrients and wastes. Not only does this occur from the mother to the fetus, but from the fetus to the mother as well. The placenta is connected to the fetus via the umbilical cord in which there are 2 blood vessels: an umbilical artery and an umbilical vein. The blood flow in these vessels is reversed. Rather than carrying oxygen rich blood via the umbilical artery, the fetus receives blood via the umbilical vein. The umbilical artery carries away fetal wastes and oxygen-depleted blood to the placenta.

Answer 3

yes, the baby receives all its blood from the mother through the umbilical cord in turn exchanging nutrients as well as waste., through the placenta which acts like a filter

Answer 4

It works both ways.

The child does not produce solid waste until later in its gestation.

The child does produce urine which is filtered out by the placenta and transfered to the mothers kidneys to dispose of.

This is why some mothers experience toximia, or her kidney's inability to deal with the added waste.

The placenta takes the place of a heart/lung machine, dialysis machine, and a feeding tube.

The umbilicl cord is also where the intestines are created and inserted into the abdominal cavity of the fetus.

Answer 5

Nutrients Yes. Waste No

Answer 6

Well thats probably what he means you probably have your mothers blood type when two people create a baby the baby will either have the same blood as their mother or father... example mom has o positive dad has a negative baby will either have o positive or a negative ... if thats not what your asking i dont really understand your question well your father obviously doesnt understand biology then ... those traits hes talking about are genetic traits and are in your dna which is in your blood... your saliva youe hair ect... yes you are blood related to your father because of these gentetoc traits that are in your blood... just because you dont have the same blood type does not mean your not blood related you have half his genes making up your dna in your blood .... but your blood type is ypur mothers which has to do with certain antigens i THINK 9th grade biology was 10a years ago for me

Answer 7

yes there is an exchange of nutrients and waste material too but if the Rh factor is opposite there may be a danger if any leak of blood in to the babies blood . But it happens the second time there is no much danger to any of those

Answer 8

You have some good answers, and I would add that the placenta itself is the permeable barrier you ask about.

Answer 9

mothers blood exchanges nutrients through the placenta but the fetus gives out wastes through the allantois which is a membrane surrounding the fetus during its growth.

Answer 10

Yes it does, all throughout the pregnancey. And even after birth, is taken in2 the babies' blood stream through breast-milk.
From a yahoo Medical Assistant, Australia.