Obstruction of a blood vessel caused by a stationary blood clot is known as?

Thrombosis refers specifically to the process in which a blood clot, known as a thrombus, forms within a blood vessel and obstructs the flow of blood. This condition can occur in veins or arteries and is typically the result of factors such as blood vessel injury, stasis of blood flow, or hypercoagulability.

In this instance, the question describes an obstruction by a stationary blood clot, which aligns perfectly with the definition of thrombosis. The clot remains at the site of formation, effectively impeding blood circulation in the affected area.

Other terms such as embolism refer to clots or other debris that travel through the bloodstream and then lodge in a blood vessel, hemostasis describes the process of stopping bleeding, and atherosclerosis involves the buildup of plaques within arteries, which is different from the formation of a thrombus. Recognizing the distinctions between these terms is crucial for understanding various vascular conditions.