2006-06-14 13:20:41 · 25 answers · asked by purplecan82 2 in Health ➔ Other - Health
Well, inside the arteries (and has no oxygen), it's actually blue (you can probably see some in your wrists), but when it comes in contact with oxygen, it reacts with the iron in the hemoglobin to produce a red colour. By the way, cyrus_xi, it is true (you can tell by the blue lines in your wrists), and the only reason it's red in the packets is that they take blood from veins, not arteries (veins contain blood that are carrying oxygen from the lungs to the muscles, so it's red).
2006-06-14 13:24:55 · answer #1 · answered by Onyx Blackman 3 · 1⤊ 3⤋
Actually, blood isn't red. There are red blood cells that makes the blood look red. The red blood cells are there to carry oxygen to the rest of the body.
2006-06-14 20:23:49 · answer #2 · answered by Marie N 3 · 0⤊ 0⤋
Blood actually can be several colors. For the most part oxygenated blood is a bright red in its color. Deoxygenated blood is a darker shade of red.
Plasma which is what makes blood liquidy, is yellow.
Blood is red because of the hemoglobin in it. When oxygen enters the blood these hemoglobin grab onto it and turn bright red. they then deposit it in the body and become darker.
Blood is not blue when it doesnt touch oxygen. Its actually a dark red-purple color. When you look at your wrists the blue you see is the color of the outside of your veins, which are blue whether or not there is blood in them.
2006-06-14 20:25:37 · answer #3 · answered by maui_rule 1 · 0⤊ 0⤋
Inside blood there are cells called erythrocytes or supply red blood cells they transport oxygen in your blood to take it to all your organs
this cells are filled with a substance called hemoglobin which has iron
Due to its own molecular disposition hemoglobin can refract light and therefore it has colors depending on which form it takes
usually its it has a dark almost purple color that is when it has no oxygen because it gave it to the organs that´s why your veins seem bluish but when hemoglobin gets loaded with oxygen in your lungs it changes and now has a bright red color that´s why blood in the arteries is red
as you can see it is always red but it changes from bright red with it has oxygen to dark red when it has no oxygen.
if hemoglobin leaves the red blood cells is is degrades into other substances that also has distinctive colors one it´s called biliverdin which is green and the other is bilirrubin which is yellow.
that explains then why when you get a bruise it starts purple (hemoglobin) then gets shades of green (biliverdin) and then yellow (bilirrubin)
2006-06-14 20:40:44 · answer #4 · answered by larkus 2 · 0⤊ 0⤋
blood is red because when you get a cut the blood rapidly changes from blue. the blue comes from the vains in the body. when one of the vains are open then red blood comes out.
2006-06-16 14:15:43 · answer #5 · answered by msspongebob26 2 · 0⤊ 0⤋
Red blood cells color the blood.
2006-06-14 20:24:30 · answer #6 · answered by Anonymous · 0⤊ 0⤋
Look at your wrists. See the blue veins? Blood is blue in the body, but it is red when oxygen hits it. Its a chemical reaction like when apples turn brown when exposed to oxygen.
2006-06-14 20:27:33 · answer #7 · answered by nighthawk_842003 6 · 0⤊ 0⤋
because of the red blood cells
2006-06-14 20:24:10 · answer #8 · answered by Gossamer Moondancer 4 · 0⤊ 0⤋
Actually red is the color of blood...the color was already a part of the English language when they determined that blood matched that particular hue...good try, huh?
2006-06-14 20:26:53 · answer #9 · answered by yvonnejust4today 4 · 0⤊ 0⤋
plasma is actually blue, when the red blood cells pick up oxygen the iron oxidises and turns red
2006-06-14 20:24:41 · answer #10 · answered by conz84 2 · 0⤊ 0⤋