Placenta Maternal

The maternal placenta (pars utera placentae) is the part of the placenta that develops in the uterus of a pregnant woman. It plays an important role in nutrition and protection of the developing fetus.

The maternal placenta consists of two layers - external and internal. The outer layer is called the chorion and consists of cells that produce hormones necessary for the development of the fetus and maintenance of pregnancy. The inner layer is called the decidua and consists of blood vessels and cells that provide nutrition and protection to the fetus.

During pregnancy, the maternal placenta goes through several stages of development. In early pregnancy, it is a small pouch that is attached to the wall of the uterus. As the fetus grows, the placenta increases in size and becomes more complex. In late pregnancy, the placenta can reach sizes up to 20 cm in diameter and weigh from 500 to 1000 g.

One of the main functions of the maternal placenta is to provide nutrition and protection to the fetus. Through the decidua of the placenta, the mother's body transfers nutrients and oxygen to the fetus. In addition, the placenta protects the fetus from harmful substances such as toxins and allergens that can enter the mother's body through the blood.

However, despite its important role, the maternal placenta can also cause problems during pregnancy. Some women may experience abdominal pain, spotting, or other symptoms associated with placental insufficiency. In such cases, treatment or even a caesarean section may be required.

Thus, the maternal placenta plays an important role during pregnancy, providing nutrition and protection to the developing fetus. However, if problems arise during pregnancy, additional measures may be required to maintain the health of the mother and fetus.

In human and animal physiology, the placenta is a special organ that provides communication between the mother and the developing fetus during pregnancy. It performs many functions that are necessary for the normal growth and development of the fetus, as well as for the protection and nutrition of its organs. The placenta is often called a “baby drinking hole” or a “home” for the fetus.

The placenta has its own unique structure, consisting of three main components:

Perivillus is the outer layer of the placenta, consisting of many finger-like villi that attach it to the wall of the uterus. Perivorsin contains blood