Inside your veins your blood is blue. When it oxidizes with oxygen it turns red. When it comes out in large volume, it looks very dark, almost black like.
It's not blue in your veins. If it were blue in your veins, drawing blood directly from your veins into a vial would bring out blue blood. It only looks bluish due to the light filtering through your skin.
Your blood is actually never blue inside your body although it is a lighter or darker red color depending on oxygenation level. That coupled with natural color variation probably explains this picture.
I used to think the same about blood being blue, give it a quick search and you’ll see it’s pretty much unanimous that your blood is never actually blue
Inside your veins your blood is blue. When it oxidizes with oxygen it turns red. When it comes out in large volume, it looks very dark, almost black like.
It's not blue in your veins. If it were blue in your veins, drawing blood directly from your veins into a vial would bring out blue blood. It only looks bluish due to the light filtering through your skin.
Found the reptilian
Sorry, can't make a snake tongue sound in text.
😅
Can you explain why the volume of blood causes it to oxygenate differently?
Your blood is actually never blue inside your body although it is a lighter or darker red color depending on oxygenation level. That coupled with natural color variation probably explains this picture.
I used to think the same about blood being blue, give it a quick search and you’ll see it’s pretty much unanimous that your blood is never actually blue
Well, here is where I admit I have been misunderstanding that for some time. No more. Thanks for setting me straight!