Is an ischemic stroke characterized by part of the brain dying due to lack of oxygen?

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Prepare for the PLTW Biomedical Science Test. Study with flashcards and multiple choice questions, each question comes with hints and explanations. Get ready for your exam!

Multiple Choice

Is an ischemic stroke characterized by part of the brain dying due to lack of oxygen?

Explanation:
Ischemic stroke happens when a blood vessel supplying part of the brain becomes blocked, so blood flow (and thus oxygen and glucose) to that area is cut off. Brain cells die quickly without oxygen, so the result is tissue death in the affected region. That makes the statement true: part of the brain dies due to lack of oxygen when an ischemic stroke occurs. The other scenarios describe different situations—bleeding in the brain is a hemorrhagic stroke caused by a ruptured vessel, and a blocked airway isn’t a stroke at all.

Ischemic stroke happens when a blood vessel supplying part of the brain becomes blocked, so blood flow (and thus oxygen and glucose) to that area is cut off. Brain cells die quickly without oxygen, so the result is tissue death in the affected region. That makes the statement true: part of the brain dies due to lack of oxygen when an ischemic stroke occurs. The other scenarios describe different situations—bleeding in the brain is a hemorrhagic stroke caused by a ruptured vessel, and a blocked airway isn’t a stroke at all.

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