Posterior Cerebral Artery in the Male Skull

Description

Seen from a superior cutaway into the male cranial cavity, the posterior cerebral artery (PCA) courses posteriorly from the terminal basilar artery near the interpeduncular cistern and wraps around the lateral aspect of the midbrain toward the medial surface of the occipital lobe. Distal PCA branches fan out over the calcarine region, with smaller arterioles spreading laterally and posteriorly toward the occipital pole. Around the central vascular hub, arteries consistent with the Circle of Willis occupy a more medial position, while venous channels lie more superficially against the endocranial surface and converge toward midline dural sinuses. Bone landmarks and foramina of the cranial base frame the field, providing orientation even with the brain removed. For teaching and clinical correlation, this cutaway emphasizes how the PCA’s terminal distribution maps to visual cortex, and why an occipital infarct from a PCA occlusion classically produces contralateral homonymous hemianopia, often with macular sparing via collateral flow from the middle cerebral artery. The relationship of the P1 and P2 segments to the midbrain also matters when discussing perforator strokes affecting the thalamus and upper brainstem, and when explaining why aneurysms at the posterior communicating artery junction can compromise the oculomotor nerve. Short and clear. Use this artwork for neuroanatomy and cerebrovascular modules, board style review figures on Circle of Willis variants, and clinical atlases illustrating stroke territories in the posterior circulation, as well as for patient education materials on occipital lobe ischemia and visual field loss. It also fits neurosurgical and neuroradiology publications that need a bone-referenced, top-down spatial cueing of intracranial vessels without overlying brain parenchyma. Anatomical accuracy verified by SciePro's Medical Advisory Board.