Vesalius the person:
Andreas Vesalius was born in Brussels in 1514, on the morning of December 31. His given name was André Wesele (Witing) Crabbe, and Andreas Vesalius was a name taken on after deciding to pursue medicine, at age 17. He came from a line of physicians and apothecaries, and his great-great-grandfather was a physician who had amassed a large collection of medical texts, in which Vesalius sated his early interest in medicine. After studying medicine at the University of Paris for his Bachelor’s, he received his title of doctor in medicine cum ultima diminutione from the University of Padua, where only days later he was appointed Professor of Surgery and Anatomy.
This is largely a semantic matter, I believe. I’m not a cephalopod biologist, but I mostly see “arms” in them as those long, tapered limbs, with two rows of suckers along its entire length - this is what most octopuses have for all of their limbs, so calling them all arms would make sense.
Tentacles have always seemed to me to be more club-like. An un-suckered tapered part with a wide distal club with many suckers on it, or some variation on that general idea.
Oh dear, you seem to have gotten an early image file. Terrible resolution.