Mesenchyme Extraembryonic

Mesenchyme is a tissue type of connective tissue. It is the only tissue of the human body that is capable of differentiation - that is, the formation of structures for different purposes of use. The mesenchyme compartments are lymphatic and blood vessels, hematopoietic organs, teeth, cartilage, ligaments, and interstitial connective cells. But this is no longer embryonic mesenchymal tissue, but an adult one, with a formed embryo.

The mesenchymal tissue of the placenta is dense fiber that forms in the 5th week of pregnancy to ensure protection of the unborn child for the entire period of pregnancy. It performs several important functions: nourishes the baby with blood and nutrients; ensures the maintenance of the newborn's body temperature, which is very important for the development of the baby's brain.

The blood carried by mesenchymal tissue is rich in oxygen, which contributes to the proper formation of the child’s organs immediately after birth. During passage between the tissues of the fetus and placenta, blood passes through a tissue filter, which helps cleanse the blood of waste products that can damage fetal cells. The fetus in the womb also has its own blood supply system, but due to the blood being too thick, it is poorly developed in it.

During the third trimester of pregnancy, the mesenchyme gradually begins to be replaced by the newly appeared specific tissue - ectoderm. Thanks to this, a special capsule is formed that protects the offspring from infections of the placental membrane even before the onset of birth. By the end of the third period of pregnancy, the volume of ectoderm becomes larger than the volume of mesenchyme. When labor begins