Bringing all these lines of evidence together, the authors propose that high levels of prenatal sex steroid hormones in the womb, combined with increased placental function, may have made human brains ...

This temporary organ that nurtures unborn babies may have driven the development of our large, social human brains. Understanding the placenta – the basics The placenta is a dynamic, intelligent ...

Symptoms may include bleeding, cramping and abdominal tenderness. Hospitalization is frequently necessary, and early delivery may be required. Placenta Previa Normally, the placenta is located away ...