What did Morgagni determine as the origin of strokes?

Morgagni’s contributions to the understanding of strokes centered on the observation that changes in cerebral blood vessels were pivotal in the occurrence of these events. He was one of the early figures to systematically analyze the correlation between anatomical alterations in blood vessels and the onset of various diseases, including strokes. His work laid the foundation for later discoveries in neurology and cardiovascular health by emphasizing how vessel morphology and pathophysiology impact brain function.

In contrast, while blockages in arteries, brain tumors, and genetic factors are indeed related to strokes, they do not capture the broader scope of Morgagni’s findings. He specifically highlighted the structural changes within blood vessels, rather than solely focusing on blockages—which would be a more modern interpretation—or other potential causes like tumors or genetic predispositions. This focus on vessel changes is what makes the correct choice particularly significant in the historical context of understanding strokes.