What happens during a stroke?

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Prepare for the WJEC Food Science and Nutrition Level 3 Test. Use multiple choice questions with instant feedback for effective study. Be confident and ready for the exam!

Multiple Choice

What happens during a stroke?

Explanation:
Strokes occur when a blood vessel supplying the brain is blocked, cutting off the flow of blood to brain tissue. The brain relies on a continuous blood supply to bring oxygen and glucose; when this flow is interrupted, brain cells are deprived and can be damaged within minutes, producing the symptoms of a stroke. This description—blocked vessel causing reduced blood flow to the brain—best fits what happens during a stroke. The other ideas don’t match the event: increasing blood flow, low blood sugar, or no link to blood vessels aren’t how a stroke occurs.

Strokes occur when a blood vessel supplying the brain is blocked, cutting off the flow of blood to brain tissue. The brain relies on a continuous blood supply to bring oxygen and glucose; when this flow is interrupted, brain cells are deprived and can be damaged within minutes, producing the symptoms of a stroke. This description—blocked vessel causing reduced blood flow to the brain—best fits what happens during a stroke. The other ideas don’t match the event: increasing blood flow, low blood sugar, or no link to blood vessels aren’t how a stroke occurs.

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