Guide · neurology drilling
Stroke vascular territory practice questions: drill the artery, not the wording.
Vascular territory questions look like a memorization list and are really a localization task. The exam never asks “what does the MCA supply”; it gives you a patient and a cluster of deficits and makes you walk the chain backward to one artery. This page hands you the grid to self-quiz from, then shows why a fixed question set quietly stops training that chain.
Direct answer · verified May 16, 2026
For an immediate self-quiz, use the seven-territory deficit grid below: cover the right column, read a deficit, and name the artery. For unlimited drillable questions, upload your own neuro lecture deck to Studyly and get case-style vignettes, multiple-choice questions, and image-occlusion cards on every territory in about 60 seconds. That beats a fixed web bank because the questions match the cutoffs and diagrams your professor actually taught, and they reword on revisit so you cannot pattern-match them.
Territory facts cross-checked against StatPearls on middle cerebral artery stroke and StatPearls on anterior cerebral artery stroke.
The seven territories, and the deficit that gives each one away
This is the lookup table the whole topic compresses into. Cover the last column and treat each row as a question: read the territory, say the hallmark deficit, then check. Cover the first two columns and it runs the other way, the way the exam asks it: read the deficit, name the artery.
| Artery | Territory | The deficit that gives it away |
|---|---|---|
| Anterior cerebral artery (ACA) | Medial frontal and parietal lobes; the leg area of the homunculus | Contralateral leg weakness and sensory loss greater than arm; abulia, urinary incontinence |
| Middle cerebral artery (MCA) | Lateral frontal, parietal, and temporal cortex | Contralateral face and arm weakness greater than leg; aphasia (dominant side), hemineglect (non-dominant), eyes deviate toward the lesion |
| Posterior cerebral artery (PCA) | Occipital lobe, medial temporal lobe, thalamus | Contralateral homonymous hemianopia with macular sparing; alexia without agraphia (dominant), visual agnosia |
| Lacunar (lenticulostriate penetrators) | Internal capsule, basal ganglia, thalamus, pons | Pure motor, pure sensory, ataxic hemiparesis, or dysarthria-clumsy hand; no cortical signs. Driven by chronic hypertension and diabetes |
| PICA (lateral medullary, Wallenberg) | Lateral medulla | Ipsilateral facial pain and temperature loss with contralateral body loss; vertigo, dysphagia, hoarseness, ipsilateral Horner syndrome and ataxia |
| AICA (lateral pontine) | Lateral pons | Ipsilateral facial paralysis and hearing loss; vertigo, ataxia; contralateral body pain and temperature loss |
| Watershed / border zone | Cortex between ACA-MCA and MCA-PCA territories | Bilateral proximal limb weakness (man-in-a-barrel) after global hypoperfusion: cardiac arrest, severe hypotension, carotid stenosis |
Add the basilar artery as an eighth if your course covers it: a proximal occlusion produces locked-in syndrome, quadriplegia with preserved consciousness and vertical gaze. Deficit patterns above follow the standard StatPearls descriptions of each cerebral artery stroke.
The skill is a three-step chain, and a fixed list lets you skip it
A real vascular territory question is not “recall a fact.” It is a short reasoning walk, and the artery is the last step, never the first. Here is the chain the exam is timing you on.
How a vignette is meant to be solved
Read the deficit
List exactly what the patient cannot do: which limbs, face involved or spared, language, vision, vertigo, crossed signs.
Place the lesion
Cortex, deep penetrator, or brainstem? Cortical signs (aphasia, neglect) say surface. Crossed signs say brainstem. Clean motor or sensory says lacunar.
Name the artery
Only now pick the vessel that feeds that region. The artery is the last step, not the first, and it is the step a fixed question set lets you skip.
Here is the trap with a fixed bank. The first time you see a question, you walk all three steps. By the third pass you recognize the vignette by its wording, “the 68-year-old with the gaze deviation,” and your brain jumps straight to the answer without touching the chain. The question still feels easy, so you think you know it. On exam day the vignette is reworded, the chain was never rehearsed, and the easy question is suddenly hard. The fix is not more questions. It is questions that change their wording every time you revisit them, so the only way through is the chain.
A generic stroke bank versus your own neuro deck
Every stroke question set that you can find online is a fixed artifact written by someone who has never seen your syllabus. That is fine for the broad strokes and a problem for the details, because this topic lives in the details: which territories your professor stressed, which eponymous brainstem syndromes are in scope, whether watershed infarcts are even tested.
Where the questions come from
A fixed set written against some average curriculum. It cannot know your professor weighted lacunar syndromes heavily and skipped AICA, or that their territory diagram labels regions differently from the textbook. You drill someone else's emphasis.
- Same wording every pass, so you pattern-match the question
- No image-occlusion built from your professor's territory map
- Cannot reflect which territories your course actually tests
One neuro deck, four question formats
This is the part that matters for vascular territories specifically. From a single upload, Studyly emits four formats, and stroke localization needs more than one of them. The flat MCQ tests recognition; the case vignette tests the localization chain; the image-occlusion card tests the spatial map; free-response forces you to produce the answer cold.
What one upload turns into
The anchor format here is the image-occlusion card. A brain cross-section colored by ACA, MCA, and PCA distribution is spatial, not verbal: plain text recall does not train it, and a masked diagram does. Studyly builds image-occlusion flashcards from the diagrams in your deck, the territory map included, and exports them with their occlusion masks intact to an Anki .apkg file if you already run Anki. The other three formats drill the same territories from the verbal side, so the artery-to-deficit pairing gets attacked from both directions.
Why the rewording is the load-bearing part
Stroke vascular territories are the single most pattern-matchable topic in neurology. The artery-to-deficit pairings are short, fixed, and finite, which is exactly the shape of knowledge your brain loves to fake. You see “leg weakness greater than arm” three times, you bind it to “ACA,” and from then on you are recognizing four words, not localizing a lesion. The recognition feels like mastery right up until the wording shifts.
Studyly auto-rephrases each question when it comes back around, so the same territory shows up as a different patient, different phrasing, different distractor mix. You cannot lazy-match the first three words. The built-in spaced repetition then weights your revisits toward the territories you keep missing, so a deck of 200 stroke questions does not waste your time re-drilling the MCA you already own while the watershed infarct quietly stays unlearned.
“Studyly's question quality on a held-out three-document eval scored on factual correctness, clarity, distractor quality, and question-type coverage. Unattle scored 78.0, Gauntlet 68.0, Turbolearn 57.8.”
Internal eval run by Jungle, the company behind Studyly. Methodology and per-criterion scores at studyly.io/quality.
For a topic where a wrong keyed answer teaches you the wrong artery, factual correctness is the criterion that matters most, and it is the one the eval scores first. Read it as the company's own measurement on a consistent rubric, not an independent audit.
Free tier on app.jungleai.com, no credit card. Drop your cerebrovascular lecture and watch it become case-vignettes and image-occlusion cards in about 60 seconds.
Frequently asked
What is a vascular territory in stroke, in one line?
It is the region of brain a single artery feeds, so when that artery occludes, the deficit is whatever functions live in its territory. That is why stroke localization works backward: the pattern of lost functions points to a region, and the region points to one artery. There are roughly seven territories worth memorizing cold for exams: ACA, MCA, PCA, the lacunar penetrators, PICA, AICA, and the watershed border zones. The grid at the top of this page lists each one with the deficit that gives it away.
How are stroke vascular territory questions actually asked on exams?
Almost never as a flat definition. The Step 1, Step 2 CK, and neurology shelf format is a clinical vignette: a patient age, a sudden onset, a cluster of deficits, sometimes a risk factor or an eye-deviation detail, and the question asks which artery is occluded or which territory is infarcted. So the skill being tested is not recall of a list, it is the localization chain: deficit, then territory, then artery. Practice questions that hand you the artery in the stem, or that you have seen enough times to recognize by wording, do not train that chain.
What is the fastest way to separate an ACA stroke from an MCA stroke?
Look at the limb gradient. ACA feeds the medial cortex where the leg area of the motor homunculus sits, so an ACA stroke weakens the contralateral leg more than the arm. MCA feeds the lateral cortex where the face and arm are mapped, so an MCA stroke weakens the contralateral face and arm more than the leg, and on the dominant side adds aphasia. Leg greater than arm means ACA; face plus arm greater than leg means MCA. Source: StatPearls on anterior and middle cerebral artery stroke.
Can I make practice questions from my own neuro lecture slides?
Yes, and for this topic that is the point. Upload your neurology or neuroanatomy lecture deck, the cerebrovascular PDF chapter, or a recorded lecture, and Studyly converts it into multiple-choice questions, case-style vignettes, free-response prompts, and image-occlusion flashcards in about 60 seconds. The questions are generated against the exact deck your professor taught from, including the localization grid or territory map on their own slide, not pulled from a generic web bank that may emphasize different cutoffs.
Why use image-occlusion for the vascular territory map?
Because the territory map is spatial, not verbal. A brain cross-section colored by ACA, MCA, and PCA distribution is exactly the kind of diagram that fails on plain text recall and succeeds on occlusion: one region is masked, you name the artery and its hallmark deficit, then reveal. Studyly generates image-occlusion flashcards from the diagrams in your deck alongside the text questions, and exports them, occlusion masks included, to an Anki .apkg if you already live in Anki.
Why not just ask ChatGPT to write stroke vascular territory questions?
It will write them, but three things break on revisit. There is no quality rubric, so a wrong keyed answer looks identical to a right one. It does not track which territories you keep missing, so you re-drill what you already know. And it serves the same wording every time, so within a few rounds you pattern-match the question instead of the medicine. Studyly auto-rephrases each question on revisit and runs spaced repetition over what you got wrong, so the artery-to-deficit pairing stays a real retrieval each time.
Related reading on this site
- USMLE vignette drilling from your own lectures the case-vignette format applied across every neuro topic, not just stroke.
- Auto-rephrasing practice questions: why the wording has to change the mechanism that stops you pattern-matching the artery instead of localizing it.
- AI-generated practice question quality: the part you cannot grade yourself why a wrong keyed answer is the failure mode that costs you marks.
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