How do chemical constituents of the materl blood differs just before entering the placenta and after leaving it?

Question: How do chemical constituents of the materl blood differs just before entering the placenta and after leaving it?
- Keywords:
  blood
Asked by yerk22naw to Vanessa, John, Sharon, Miriam, Lucian, Justa, Jared, Brayan on 22 Jul 2025.
- Justa Mwangi answered on 22 Jul 2025:
  
  Before entering the placenta, maternal blood is oxygen-rich and nutrient-rich, carrying waste products from the mother’s body. After passing through the placenta, the maternal blood is depleted of oxygen and nutrients, and it carries waste products from the fetus. Essentially, the placenta acts as a filter and exchange point, transferring oxygen and nutrients to the fetus while removing waste products from the fetal circulation.

Question: How do chemical constituents of the materl blood differs just before entering the placenta and after leaving it?