Deoxyganated blood means blood that doesn't have oxygen.
If you mean not specifically, they are the veins.
It means someone has been bleeding.
Taken literally, deoxygenated means "without oxygen," but physiologically it means blood that has dropped its oxygen load to the tissues. There is still oxygen bound to hemoglobin in deoxygenated blood, just not as much as oxygenated blood.
Blue usually represents deoxygenated blood returning to the heart through the veins, red represents oxygenated blood being pumped out of the heart through the arteries, and purple can indicate a mixture of oxygenated and deoxygenated blood in the heart chambers.
what do you mean by "fresh blood"? Deoxygenated blood from the body comes through the inferior and superior vena cava. Oxygenated blood from the lungs comes to the heart through the pulmonary veins.
If you mean the Superior Vean Cava, it is the artery that brings the deoxygenated blood from the head to the right atrium of the heart.
Do you mean oxygenated blood? If so, then this would be arteries. This would be because all arteries do so except for the one going to your lungs (pulmonary artery) as it carries deoxygenated blood to the lungs and the pulmonary vein carries oxygenated blood to the heart. Of course, all other veins carry deoxygenated blood around the body. Maybe this is what you meant?-dragon934-
"Pulmonary veins" donot carry carbon dioxide as they bring oxygenated blood from the lungs to the heart.
The right side of the heart receives blood that is deoxygenated from the rest of the body. Furthermore, this blood will have a high CO2 content, needing removal from the body. The right side of the heart therefore pumps blood via the pulmonary arteries (deoxygenated blood) to the lungs, where it will be re-oxygenated and be ready for systemic circulation. Therefore it is referred to deal with pulmonary circulation as it pumps blood to the lungs.
it depends where about you mean; the pulmonary veins, coming from the lungs, firstly pass just-oxygenated blood from the lungs to the heart. after that the arteries (like the aorta) pass the highly oxygenated blood from the left side of the heart to the body parts. (this is most likely the answer you are looking for) when the organs have taken all the oxygen out of the blood and replaced it with deoxygenated blood. the deoxygenated blood moves back to the right side of the heart where it is pumped back to the lungs for reoxygenation!
Black blood typically refers to deoxygenated blood that appears dark when exposed to air. Red blood refers to oxygenated blood that is rich in hemoglobin and appears bright red. The color change represents the difference in oxygen levels within the blood.