What is the structure and function of placenta?

Question

Answer

The placenta serves as an interface between the mother and the developing foetus.
It has three main jobs-
1-attach the fetus to the uterine wall.
2-provide nutrients to the fetus.
3-allow the fetus to transfer waste product I to the mother's blood.

Answer

1)The embryo gets nutrition from the mother’s blood with the help of a special tissue called placenta. It is a disc which is embedded in the uterine wall.

2)The placenta contains villi on the embryo’s side of the tissue. On the mother’s side are blood spaces, which surround the villi. It has the following functions:

3)This provides a large surface area for glucose and oxygen to pass from the mother to the embryo.

4)The developing embryo will also generate waste substances which can be removed by transferring them into the mother’s blood through the placenta.

5)The development of the child inside the mother’s body takes approximately nine months.

Answer

Placenta Structure and Function

The placenta serves as an interface between the mother and the developing fetus and has three main jobs: Attach the fetus to the uterine wall. Provide nutrients to the fetus. Allow the fetus to transfer waste products to the mother's blood

The placenta acts to provide oxygen and nutrients to the fetus, whilst removing carbon dioxide and other waste products. It metabolises a number of substances and can release metabolic products into maternal and/or fetal circulations

Just prior to formation of the placenta, there are a total of six layers of tissue separating maternal and fetal blood. There are three layers of fetal extraembryonic membranes in the chorioallantoic placenta of all mammals, all of which are components of the mature placenta: Endothelium lining allantoic capillaries

Answer

The umbilical cord that connects the baby to mother for basic requirements of baby (means that cord os used to nourishment of the baby )  that is said to be placenta

Answer

Placenta is the disc shaped tissue which developed in the uterus when embryo is implanted in uterus. It provide nutrition, oxygen and removea waste materials from the embryo.

Answer

Structure and Function of Placenta

The placenta is an essential organ that develops during pregnancy and plays a crucial role in supporting the growth and development of the fetus. It is formed from both maternal and fetal tissues and is attached to the uterus wall. The structure and function of the placenta are intricately designed to facilitate the exchange of nutrients, gases, and waste products between the mother and the developing fetus.

Structure:
The placenta is disc-shaped and measures about 15-20 centimeters in diameter. It consists of two main parts:

1. Maternal Side: The maternal side of the placenta is attached to the uterine wall and is composed of a network of blood vessels and specialized cells called syncytiotrophoblasts. These cells form finger-like projections called villi, which increase the surface area for nutrient and gas exchange.

2. Fetal Side: The fetal side of the placenta is attached to the umbilical cord, which connects the fetus to the placenta. It contains blood vessels that carry oxygenated blood from the placenta to the fetus and deoxygenated blood from the fetus back to the placenta.

Function:
The placenta performs several vital functions to support the development of the fetus:

1. Nutrient and Gas Exchange: The placenta acts as a barrier between the maternal and fetal bloodstreams but allows for the exchange of nutrients, oxygen, and waste products. Oxygen and nutrients from the mother's bloodstream diffuse into the placenta and are transported to the fetus, while waste products such as carbon dioxide are removed from the fetal bloodstream and transferred to the mother for elimination.

2. Hormone Production: The placenta produces hormones that are essential for maintaining pregnancy and supporting fetal development. These hormones include human chorionic gonadotropin (hCG), which helps sustain the pregnancy, and progesterone, which helps maintain the uterine lining and prevent contractions.

3. Immune Protection: The placenta acts as a barrier, protecting the fetus from harmful substances and pathogens. It allows the transfer of antibodies from the mother to the fetus, providing passive immunity and helping protect the developing baby from infections.

4. Waste Removal: The placenta filters waste products from the fetal bloodstream, such as urea and creatinine, and transfers them to the mother's bloodstream for elimination through her kidneys.

5. Endocrine Function: In addition to hormone production, the placenta also plays a role in the metabolism of certain hormones, such as estrogen and cortisol, in the fetus.

In conclusion, the placenta is a remarkable organ that facilitates the exchange of nutrients, gases, and waste products between the mother and the developing fetus. Its structure, consisting of maternal and fetal components, allows for efficient transfer of substances, while its functions ensure the overall well-being and growth of the fetus throughout pregnancy.

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