Chapter 23 - Demyelinating diseases of the nervous system. Introduction. This group of diseases (see Table 23-1) is characterized by lesions that are associated with loss of myelin with relative sparing of axons. There are many type of disease that damage myelin in concert with the destruction of axons.
A realm is an area that is ruled by something. If you are a controlling cook who doesnât like anyone to do anything else in the kitchen, then the kitchen is your realm. Realm comes from the French for kingdom, but since there arenât so many kings or queens left in the world, youâll more often find it referring to non-royal spheres. That could be the sphere of a special kind of knowledge, like the realm of biology, or the political realm.
The estates of the realm, or three estates, were the broad orders of social hierarchy used in Christendom from the medieval period to early modern Europe. Different systems for dividing society members into estates developed and evolved over time. The best known system is the French Ancien RÃ©gime, a three-estate system used until the French Revolution. Monarchy was for the king and the queen and this system was made up of clergy, nobles, and peasants and bourgeoisie. In some regions ...