Placental Barrier

Placental Barrier: Selective Protector of Life

The placental barrier is a set of morphological and functional features of the placenta, which determine its ability to selectively pass substances from the mother’s blood to the fetus and in the opposite direction. This unique mechanism plays an important role in maintaining the health and development of the fetus, providing optimal conditions for its growth and protecting it from potentially harmful substances.

The placenta is an organ that forms inside the uterus during pregnancy and serves as a link between mother and fetus. It has a unique structure consisting of a network of capillaries surrounded by cells and performs a number of important functions. One of the key features of the placenta is its ability to regulate the penetration of various substances through the placental barrier.

The placental barrier functions as a filter that controls the transfer of substances between mother and fetus. It has the ability to pass essential nutrients, oxygen and hormones that are necessary for the growth and development of the fetus. At the same time, it protects the fetus from potentially harmful substances such as toxins, infections or certain medications.

The mechanism of functioning of the placental barrier is based on several factors. One of them is special cells called trosoblasts, which form the outer layer of the placenta. These cells have a special structure and function that help limit the passage of certain substances through the placental wall. In addition, the placenta produces a number of enzymes that can break down certain substances, preventing them from passing through.

However, not all substances are completely blocked by the placental barrier. Some substances can penetrate through it in limited quantities. For example, some medications, drugs, or alcohol can cross the placental barrier and affect fetal development. Therefore, pregnant women are advised to avoid consuming such substances so as not to harm the unborn baby.

Research into the placental barrier and its role in fetal development continues. Scientists are seeking to better understand the mechanisms that regulate the passage of substances across the placenta and their impact on fetal health. Information obtained from these studies may help develop new strategies to protect the fetus from potentially harmful exposures and ensure optimal developmental conditions.

In conclusion, the placental barrier is an important component of pregnancy that allows selective passage of substances between mother and fetus. Its ability to control the transfer of nutrients and protect the fetus from harmful substances plays a key role in maintaining the health and normal development of the fetus. Understanding how the placental barrier works has important implications for medical practice and may lead to improved health and well-being for future generations.

The placenta is a powerful organism of the fetal bladder. Without its presence, the existence of a human being in the womb is impossible. The amniotic sac is a complex anatomical structure called the “placental barter”. He is responsible for the baby's breathing and nutrition.

The placental barrier is formed as a result of the formation of a large number of villi around the fetus; it is formed in order to create a light barrier between the mother’s placenta and the fetus. Through this barrier, only oxygen (no more than 12% of the volume), which is necessary for the life of embryonic cells, enters the maternal body. The remaining 88% is done by the general blood flow. 99.25% is returned to the mother's body, which is more than 90% of all useful oxygen consumed by a pregnant woman. It is noteworthy that these numbers cannot change throughout the entire pregnancy. All components of the placental barrier are connected into a closed structure. Of the entire world population of mammals and humans, women (as the only species with a developed placental structure in the body) have significant differences in the blood flow between the mother and her fetus; as a result, she lacks a skeletal muscular system. This phenomenon is a feature of the structure of blood vessels in the fetus, and not some kind of pathology. This causes difficulties in the circulation of various components from one bloodstream to another. However, this structure is a necessary condition for the health and survival of the future person.