Almost all substances that are passively transferred fall into two classes. Their transfer is either purely "flow limited" or purely "diffusion limited," with few in between. Diffusion limited ...

The placenta has long been thought to produce serotonin during pregnancy. But in a new study, Yale researchers shatter the deep-rooted hypothesis—and show that the placenta doesn't produce serotonin ...

Maternal-fetal fluid balance is critical during pregnancy, and amniotic fluid is essential for fetal growth and development. The placenta plays a key role in a successful pregnancy as the interface ...

This Journal feature begins with a case vignette highlighting a common clinical problem. Evidence supporting various strategies is then presented, followed by a review of formal guidelines, when they ...

Placenta changes could mean male offspring of older mums more likely to develop heart problems in later life, rat study finds. Changes occur in the placenta in older pregnant mothers leading to a ...

The placenta is a temporary organ that grows during pregnancy to filter oxygen, blood, and nutrients to your baby. After you give birth, you will also deliver your placenta shortly after. Sometimes ...

This article – the seventh in an eight-part series on the endocrine system – outlines the endocrine role of the ovaries and testes in producing steroid hormones that influence many areas of human ...

Circumvallate placenta is an abnormality in the shape of the placenta. It can result in a lack of nutrients for the fetus. In circumvallate placenta, the chorionic plate, which is the part of the ...

Maternal obesity alters the structure of the placenta (a vital organ that nourishes the baby during pregnancy) more than gestational diabetes mellitus (GDM; a condition is diagnosed by poor glucose ...

Placenta previa occurs when the placenta covers the opening of the cervix during the last months of pregnancy. This condition can cause severe bleeding before or during labor. The placenta develops in ...