Q Q: 823715579
Biotin is embryo in the womb wall implantation of the prominent role. The placenta is a filter between maternal and fetal blood system, it can choose through the placental barrier types and levels of nutrients, after implantation of fetal growth will rely mainly on the placenta the filtering effect for nutrients.
In late pregnancy, fetal growth very rapidly, so the demand for vitamin is also rapidly increasing, relying only on maternal supplies vitamins cannot meet the needs of the fetal growth, lack of vitamins will lead to fetal deformity or death.
B vitamins typically not in maternal and fetal stored in the body, the main role in enzyme system, the fetus through the breast milk to get the vitamins, access and sow feed intake of vitamin B content in the diet.
In late pregnancy, for the expansion of the uterus and can accommodate the increase of fetal needs, consider uterine muscle tension.