Vinean Physiology
Vineans are of pale blue skin, but otherwise very closely resemble humans. No reasons are given in-universe for this extreme similarity of two species that evolved millions of years (and two galaxies) apart, and neither is this matter ever raised in the novels. However, it is understood throughout the series that Vineans cannot sunburn because their pale blue skin is more resilient than that of humans.
It is also indicated that some medicine will not have the same effect on Vineans as humans.
Read more about this topic: Vinea
Famous quotes containing the word physiology:
“The world moves, but we seem to move with it. When I studied physiology before ... there were two hundred and eight bones in the body. Now there are two hundred and thirty- eight.”
—Ellen Henrietta Swallow Richards (1842–1911)