Yes
your babies blood can.. not your blood nothing in the mothers blood indicates the child's gender
They don't. As they don't eat, but get their nutrients through the blood from their mothers, there isn't much waste to deal with.
Babies do not 'get' blood from their mothers. There is a separation between the mother's blood and the baby's blood. Mixing of parental and fetus' blood is a potentially a fatal condition if the blood types are not the same. Fatal for the baby, for sure, and potentially for the mother as well. What happens is that there is a transfer of oxygen and nutrients across the semi-permeable membranes that separate the two systems. If the baby did not receive these nutrients it would starve and die.
placenta
Some babies are born with HIV as their mothers were positive. Infants could get HIV by receiving a transfusion of infected blood.
Gases, All small molecules (food, structural materials, minerals); hormones, and antibodies.
No, the mother's blood does not mix with the embryo. The placenta acts as a barrier between the mother's blood supply and the embryo, allowing for transfer of nutrients and waste products without direct mixing of blood.
HIV and AIDS
to transfer nutrients through the body
True. Rh-negative mothers who are pregnant with Rh-positive babies can develop antibodies against the baby's blood, leading to hemolytic disease of the newborn in subsequent pregnancies.
Mainly through blood circulation
The growing baby has wastes and needs oxygen and nutirnets through out its time in the womb... The placenta holds many tiny cappilaries( very small blood vessels) Half are babies, and half are moms. These blood vessels run very close to each other.. The oxygen and nutrients that the baby needs are diffused from the mothers cappilaries to the babys cappilaries. In other words the oxygen and nutrients in the mothers blood is passed to the babys blood with out touching, the tiny particles are small enough to go through the walls of the cappilaries. These much needed nutrients are then taken to the baby through the imbilical cord. The baby also makes many waste products, carbon dioxide, urea(what makes up most of urine), extreme amounts of water, and salt are a few.. These waste go through the imbilical cord, to the babies tiny cappilaries in the placenta. Then it diffuses into the mothers cappilaries in the placenta.. The mother then gets rid of these waste products.