The general term for nontraumatic brain injury due to inadequate blood flow.

• A. Stroke
• B. Ischemic stroke
• C. Hemorrhagic stroke
• D. Embolic stroke

Answer: (A)

Stroke is the general term for brain injury caused by disrupted blood supply to brain tissue, and it is not due to trauma. There are two main forms: ischemic stroke, where a vessel is blocked and blood flow to part of the brain is reduced; and hemorrhagic stroke, where a vessel ruptures and bleeding damages brain tissue. Embolic stroke, while related, is a specific cause of ischemic stroke caused by an embolus traveling to the brain. Because the question asks for the broad term describing nontraumatic brain injury from disrupted blood flow, the overall label stroke best fits, since it encompasses the major categories of vascular-related brain injury rather than a single mechanism.