placental barrier

The placental barrier is a natural filter between a mother and her developing baby inside the womb. It allows essential nutrients, oxygen, and hormones to pass from mother to baby, supporting growth. At the same time, it helps block certain harmful substances, such as some bacteria and toxins, from reaching the baby. This barrier is made up of cells and tissues that regulate what gets through, providing protection while still allowing necessary substances to nourish the baby. Its function is vital for healthy fetal development and safeguarding the baby during pregnancy.