28 MCQs in Anatomy for NEET PG
During a neurosurgical procedure, the surgeon needs to identify the most common site of aneurysm formation within the Circle of Willis. Which location represents the most frequent site of saccular aneurysm development?
Regarding the functional anatomy and clinical significance of the Circle of Willis, all of the following are true EXCEPT:
Which artery is NOT a direct component of the Circle of Willis?
The anterior communicating artery connects which two vessels?
A 58-year-old man with hypertension presents with acute-onset left eye ptosis, impaired adduction and depression of the left eye, and a fixed dilated left pupil. Fundoscopy reveals no retinal changes. The structure marked **C** in the Circle of Willis diagram is most likely affected. Which clinical finding best explains why the pupil is involved in this presentation, distinguishing it from diabetic CN III palsy?
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