EVERYDAY SCIENCE

Detailed explanation-1: -An ischemic stroke occurs when the blood supply to part of the brain is interrupted or reduced, preventing brain tissue from getting oxygen and nutrients. Brain cells begin to die in minutes. A stroke is a medical emergency, and prompt treatment is crucial. Early action can reduce brain damage and other complications.

Detailed explanation-2: -Haemorrhagic strokes They happen when a blood vessel inside the skull bursts and bleeds into and around the brain. The main cause of haemorrhagic stroke is high blood pressure, which can weaken the arteries in the brain and make them more likely to split or rupture.

Detailed explanation-3: -Restrictions in blood flow may occur from vessel narrowing (stenosis), clot formation (thrombosis), blockage (embolism) or blood vessel rupture (hemorrhage). Lack of sufficient blood flow (ischemia) affects brain tissue and may cause a stroke.

Detailed explanation-4: -A stroke, sometimes call a brain attack, happens in one of two ways: A blocked artery or a ruptured artery. A stroke, sometimes called a brain attack, occurs when something blocks blood supply to part of the brain or when a blood vessel in the brain bursts. In either case, parts of the brain become damaged or die.

Detailed explanation-5: -High blood pressure is a leading cause of stroke. It occurs when the pressure of the blood in your arteries and other blood vessels is too high. There are often no symptoms of high blood pressure.