Human Blood Is Never Blue!

Human blood is always red, never blue! It's a common misconception that deoxygenated blood is blue, but it simply isn't true. Diagrams of the human circulatory system often portray arteries (mainly carrying oxygenated blood) as red, and veins (mainly carrying deoxygenated blood) as blue. This is to help students learn the names of veins and arteries and is not a reflection of the real color of blood vessels or blood. Surface veins appear bluish because of the way they absorb and reflect light through the skin. All the blood inside your body is red... learn moreif(zs>0){if(zSbL250)gEI("spacer").style.height=Math.floor(e[0].height/12)+17.5+'em';else{var zIClns=[];function walkup(e){if(e.className!='entry'){if(e.nodeName=='A'||e.style.styleFloat=='right'||e.style.cssFloat=='right'||e.align=='right'||e.align=='left'||e.className=='alignright'||e.className=='alignleft')zIClns.push(e);walkup(e.parentNode)}}walkup(e[0]);if(zIClns.length){node=zIClns[zIClns.length-1];var clone=node.cloneNode(true);node.parentNode.removeChild(node);getElementsByClassName("entry",gEI("articlebody"))[0].insertBefore(clone,gEI("spacer"))}}}};zSB(2);zSbL=0

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