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The blood turns red once it has come into contact with oxygen. This is why your veins appear blue, purple, etc, but when you cut yourself the blood is red. Not sure about details, but oxygen changed the color.

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16y ago

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Is Blood is bright blue when it returns to the heart?

Not in a human, no. Oxygenated blood is bright red. Deoxygenated blood is a dark red.


What color is blood when it returns to the heart?

Blood is bright red when it returns to the heart from the lungs. It is darker red when it returns to the right atrium from the systemic circulation.


What is the reddish blood that enter the heart?

De-oxygenated blood is dark red. Oxygenated blood is bright red. Both enter the heart- the former enters the right heart; the latter enters the left heart.


What colour is the blood that is carried away from the heart?

Bright red blood because it is already oxygenated.


What is the color intensity of blood that flows from the lungs to the heart?

Blood that flows from the lungs to the heart is oxygenated, so it's bright red. In contrast, blood that flows from the heart to the lungs is deoxygenated, and so is dark red.


What color is blood outside your body?

Fresh blood is brilliant red, but as it clots it will turn brown.


What blood vessel is cut when the blood is bright red?

When blood is bright red, it typically indicates that it is oxygenated, which means it is flowing from the lungs to the body. The blood vessel associated with this bright red color is usually an artery, specifically the pulmonary artery or systemic arteries like the aorta. Arteries carry oxygen-rich blood away from the heart, while veins carry deoxygenated blood back to the heart, which is darker in color.


Blood in arteries is red because it is rich in oxygen?

The pulmonary arteries are the only ones not carrying oxygenated blood. Arteries transport blood away from the heart and veins are to carry blood back to the heart. When you think this way, you may be able to visualize which vessels has oxygenated blood.


Why is red the color of heart?

Why is red the colour of the heart?Its because of the blood. When the blood leaves the heart, it will be bright red.


Arterial blood is what color?

Arterial Blood is Bright Red


What is the colour of the blood that leaves the lungs?

Blood that is rich in oxygen appears red. Blood that is poor in oxygen appears blue. Arteries are tough, elastic tubes that carry blood away from the heart. Veins carry the blood to the heart.


Bright red blood that spurts out comes from severed vein or severed artery?

It comes from an artery. Arteries carry OXYGENATED blood away from heart. This oxygenated blood is bright red. The Arterial system is on the high pressure side of the heart. The pressure changes as the heart contracts and then expands and refills (a heartbeat). When an artery is punctured the blood will spurt with every heartbeat.