Thrombosis is the process of formation of blood clot inside s blood vessel.Therefore obstructing the flow of blood through the circulatory system.A Thrombosis is a blood clot in the circulatory system which attaches to the site at which it is formed & remains their ,hindering blood flow.A section of blood clot that breaks from Thrombosis & circulates in the blood stream is an embolism moves through the vascular system until it reaches to different parts of the body.Embolous is a dangerous,& partially feacle complication of Thrombosis.