1 If a lot of blood leaks out, it can cause a buildup of pressure in the brain because the brain is enclosed in the skull. There is no room for brain tissue to expand, and so the leaked blood can compress and kill important areas of the brain.  Hemorrhagic strokes tend to be more serious than ischemic strokes.
Horizontal definition, at right angles to the vertical; parallel to level ground. See more.
A definition of the term original horizontality, law of is presented. It is implied in the work of Nicolas Steno, a Danish naturalist. The law states that during deposition, subaqueous sediments lie horizontally as their angles of rest are very low.