Placenta: How it works, what's normal - Mayo Clinic
2024年3月8日 · The placenta is a structure that develops in the uterus during pregnancy. In most pregnancies, the placenta is located at the top or side of the uterus. In placenta previa, the placenta is located low in the uterus. The placenta might partially or …
Placenta - Wikipedia
The placenta (pl.: placentas or placentae) is a temporary embryonic and later fetal organ that begins developing from the blastocyst shortly after implantation. It plays critical roles in facilitating nutrient, gas and waste exchange between the physically separate maternal and fetal circulations, and is an important endocrine organ , producing ...
Placenta: Overview, Anatomy, Function & Complications
2022年2月4日 · 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. Your baby is connected to the placenta by the umbilical cord. Together, the placenta and umbilical cord act as your baby's lifeline while in the uterus.
What Is a Placenta? Types, Development, Complications - MedicineNet
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 special structures, which eventually develop into the placenta.
Placenta - What Is It and How It Works | Biology Dictionary
2017年7月25日 · The placenta is an organ which is responsible for nourishing and protecting a fetus during pregnancy. It is unique in that it is a temporary organ; it grows alongside the fetus during pregnancy, and then is expelled along with the fetus at birth.
What the Placenta Is and How It Forms During Pregnancy - What to Expect
The placenta is a pancake-shaped organ that develops in the uterus exclusively during pregnancy. It’s made up of blood vessels and provides your developing baby with nutrients, water, oxygen, antibodies against diseases and a waste removal system.
Placenta: Its Role and Complications - Verywell Health
2024年10月31日 · The placenta forms in the uterine wall where the fertilized egg implants. It typically sits along the back uterine wall—about 6 cm from the cervix—occasionally accessing the side walls throughout its course of development. However, it can also attach to the front, top, and sides of the uterus.
Placenta: anatomy and function - Kenhub
2023年10月26日 · The placenta is a highly-specialized organ that plays an essential role during pregnancy. It is responsible for providing nutrition and oxygen to the fetus as well as removing waste material and carbon dioxide.
The placenta: What it is and how it works - BabyCenter
2022年1月3日 · 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 grows to be about 9 inches in diameter and about an inch thick at the center.
The placenta: a multifaceted, transient organ - PMC
The placenta is arguably the most important organ of the body, but paradoxically the most poorly understood. During its transient existence, it performs actions that are later taken on by diverse separate organs, including the lungs, liver, gut, kidneys and endocrine glands.