Answer:
The correct answer is ''blood vessel.''
Step-by-step explanation:
Blood vessels function as conduits for blood to pass through. Blood clots are masses that occur when blood hardens from liquid to solid and becomes harmful when it can block an artery or vein and stop blood flow. This is called a thrombus. If the thrombus grows in the wall of the arterial vessel that carries blood to an organ, the blood flow that passes through it is reduced or completely block and consequently, the blood supply that reaches the organ in question decreases, thus producing a ischemic situation. If ischemia is not treated promptly, it can lead to tissue damage or necrosis in that area. In an ischemic stroke, parts of the brain are deprived of nutrients and oxygen when blood vessels become blocked. This damages brain cells and they begin to die.