Self-actualization, according to Maslow, represents the growth of an individual toward fulfillment of the highest needs. Maslow argues that only high acheivers are self-actualizers, but we are all in fact capable of self-actualization.
In a thrombotic stroke, a blood clot (thrombus) forms inside one of the brain's arteries. The clot blocks blood flow to a part of the brain. This causes brain cells in that area to stop functioning and die quickly.
Disorders of blood cells (for instance sickle cell disease) or blood proteins can increase the chance of thrombus formation and therefore contribute to the risk of ischemic stroke. An embolus is most often a piece of a thrombus that has broken free and is carried toward the brain by the bloodstream. The term thromboembolus is used a lot because it turns out that most emboli arise from thrombi. However, bits of plaque, fat, air bubbles, and other material also qualify as emboli. Presumably an embolus floats along with the flowing blood until it encounters a narrowing in an artery through which it cannot pass.