The blood vessels of the skin are one of the few areas of the body where the vessels are innervated by both the sympathetic and parasympathetic divisions.
Alone and unloved, Kane awaits the inescapable hand of death. The script for Citizen Kane, written by Herman J. Mankiewicz (with an assist from Welles), is a thinly-disguised fictional biography of publishing king William Randolph Hearst, who was 76 years old when the movie came out in 1941.
According to Lisa Tuttle, it was Ben Bova, the editor of Analog, who suggested it. I emailed Ben Bova, who said that he heard it in a documentary on Leonardo da Vinci. It was probably The Life of Leonardo Da Vinci (1971), which aired on CBS in English in 1972. It's available on Netflix in case anybody wants to follow up on this.