Why is our Blood Red?
By khat009
@khat009 (62)
Philippines
September 26, 2011 3:31am CST
Our blood is red because of the substance, Hemoglobin, which is contained in our Red Blood Cells. The function of these specialized cells is to carry oxygen from our lungs to wherever it is needed in the body. They are formed in our bone marrow and the hemoglobin in them, which is made of iron and protein, becomes redder as it picks up oxygen. It loses this color as it deposits oxygen in the cells and picks up carbon dioxide to carry back to the lungs, which is why some of the blood vessels in our hands and arms appear blue through our skin..
2 responses
@mantis36 (4219)
• Philippines
26 Sep 11
i think the color of blood is a yellow orange to orange but due to numbers our eyes fools... fool to look it red....
for example:
the color of the sea is either sea green or dark blue when viewed if your on board the ship....
but putting the sea inside the glass crystal cup then what you observe looking at the sea colors is not anymore sea green and no dark blue but a transparent color, but due to numbers of volumes, the sea color looks sea green or dark blue.....
