Under ideal conditions, sperm lives for days after ejaculation from intercourse. This article examines sperm motility and how ...

The uterus is a muscular bag with a soft lining ... giving insight to the human body and its capabilities. BBC Teach has thousands of free, curriculum-linked resources to help deliver lessons ...

The next step for the fertilized egg is to implant into the walls of the uterus, beginning the initial stages of pregnancy. If fertilization and/or implantation does not take place, the body ...

From periods of rapid aging in our 40s and 60s to ancient brains that don’t decompose, here are some of the year’s most intriguing stories about human biology ...

The official term for such a calcified fetus is lithopedion – from the ancient Greek for 'stone baby' – and the phenomenon is ...

The embryo implants in the lining of your uterus. Your body starts making human chorionic gonadotropin (hCG), which is the hormone that pregnancy tests look for. There are two types of abortion ...

In the present context, there are approximately six hundred thousand women suffering from the problem of uterus ... body, international or national, has recognized explicitly that a high incidence of ...