Which term describes a sudden neurological event caused by rupture or obstruction of a brain vessel?

• A. Myocardial Infarction
• B. Antibody
• C. Stroke
• D. Stenting

Answer: (C)

Stroke is a sudden neurological event caused by rupture or obstruction of a brain vessel. It happens when a brain artery is blocked by a clot (ischemic stroke) or when a vessel bursts and bleeds into surrounding brain tissue (hemorrhagic stroke). The interruption of blood flow deprives brain cells of oxygen and nutrients, leading to rapid loss of function in the areas served by that vessel—often presenting as sudden weakness or numbness on one side, trouble speaking or understanding speech, vision changes, dizziness or imbalance, or a severe headache. Recognizing symptoms quickly is crucial because timely treatment can limit brain damage and improve outcomes.

Other options describe different concepts: a myocardial infarction is a heart attack, antibody is an immune system protein, and stenting is a procedure to reopen narrowed arteries and does not by itself describe a sudden brain event.