The placenta (pl.: placentas or placentae) is a temporary embryonic and later fetal organ that begins developing from the blastocyst shortly after implantation.

As your own blood flows through your uterus, the placenta seeps up nutrients, immune molecules, and oxygen circulating through your system. It shuttles these across the amniotic sac, through the …

Mar 8, 2024 · Find out what the placenta does, issues that might affect it and how it is delivered. If you're pregnant, you might wonder what exactly the placenta is, what it does and what might affect it. …

What is the placenta? The placenta is a temporary organ that connects your baby to your uterus during pregnancy. The placenta develops shortly after conception and attaches to the wall of your uterus. …

The timeline of placental development illustrates how the placenta changes over the course of pregnancy. A crucial stage of placental development occurs when blood vessels in the lining of the …

Mar 13, 2025 · What Is the Placenta? The placenta is a temporary organ that develops in the uterus during pregnancy. It connects the uterus to the developing baby and performs many vital functions. …

During pregnancy, a special organ develops in the uterus to support the life of the fetus; this is known as the placenta. As the embryo implants in the uterus, some cells from the embryo transform into …

May 30, 2025 · What is the placenta? The placenta is a pancake-shaped organ that develops within the wall of your uterus and connects to your baby though the umbilical cord. By the end of pregnancy, it …

Dec 4, 2025 · UC San Diego Researchers Uncover the Earliest Stages of Human Placenta Formation A gene that turns on very early in embryonic development could be key to the formation of the …

A trained placental pathologist can examine a placenta and assist in the elucidation of the causes of poor pregnancy outcome. A complete placental examination is most useful shortly after the time of …