Magma: Magma, molten or partially molten rock from which igneous rocks form. It usually consists of silicate liquid, although carbonate and sulfide melts occur as well. Magma
There are three main types of stroke: transient ischemic attack, ischemic, and hemorrhagic. Itâs estimated that 87 percent of strokes are ischemic. Doctors also call a transient ischemic attack (TIA) a warning or ministroke. A clot that temporarily blocks blood flow to your brain causes a TIA.
Stroke: Causes and Types. 1  Ischemic stroke - from reduced blood flow to a brain area. 2  Hemorrhagic stroke - from bleeding in the brain. 3  Right hemisphere stroke - a right brain stroke affecting the left side of the body.  Left hemisphere stroke - a left brain stroke affecting the right side of the body.