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Or just someone without medical training going by what they see, I mean I look at my veins in my arms and they look blue but I have no idea why that is.
by dhughes 13y ago
Or just someone without medical training going by what they see, I mean I look at my veins in my arms and they look blue but I have no idea why that is.
- jeroen94704 13y agoThat's just an optical effect caused by the fact that the veins are (normally at least) underneath the skin. Even oxygen poor blood is not blue.
- dhughes 13y agoYeah I figured something like that. I found this very detailed explanation, in a nutshell skin scatters light. https://www.imt.liu.se/edu/courses/TBMT36/pdf/blue.pdf https://www.imt.liu.se/edu/courses/TBMT36/pdf/blue.pdf And this list of animals with actual blue blood, when its healthy and oxygenated not de-oxygenated: http://www.buzzfeed.com/donnad/10-animals-that-bleed-blue http://www.buzzfeed.com/donnad/10-animals-that-bleed-blue
- Raphmedia 13y agoYou can try a little experiment... Cut a slim slice of ham and put it over something red. See for yourself.