Main > Medical terms> Allantois


Allantois (allantois; Greek allantos, alias – sausage + - eides – similar) – a hollow outgrowth of a back gut of a germ of the highest vertebrata which consists of layers of a visceral mesoderm and an entoderm (at the person underdeveloped). In an allantois blood vessels which are a part of a placental circle of blood circulation are formed. The most proximal site of an allantois connecting to a back gut is the beginning of a bladder.

Whether you know that:

In the aspiration to pull out the patient, doctors often go too far. So, for example, a certain Charles Janszen during the period from 1954 to 1994 endured more than 900 operations on removal of new growths.